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"B" 43B Quadrajet / Dualjet Primary Metering Rods, .043"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .043"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 43B rod has a large diameter of .043" and a small diameter "power tip" of .026". The .043" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2543B
"B" 44B Quadrajet / Dualjet Primary Metering Rods, .044"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .044"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 44B rod has a large diameter of .044" and a small diameter "power tip" of .026". The .044" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2544B
"B" 45B Quadrajet / Dualjet Primary Metering Rods, .045"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .045"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 45B rod has a large diameter of .045" and a small diameter "power tip" of .026". The .045" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2545B
"B" 48B NOS Quadrajet  Primary Metering Rods, .048"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Very limited quantities available. Rod Specifications:
Double taper design “B”
Cruise diameter: .048"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 48B rod has a large diameter of .048" and a small diameter "power tip" of .026". The .048" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.   Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2548B-NOS
"B" 48B Quadrajet / Dualjet Primary Metering Rods, .048"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .048"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 48B rod has a large diameter of .048" and a small diameter "power tip" of .026". The .048" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2548B
"B" 49B Quadrajet / Dualjet Primary Metering Rods, .049"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .049"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 49B rod has a large diameter of .049" and a small diameter "power tip" of .026". The .049" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2549B
"B" 50B Quadrajet / Dualjet Primary Metering Rods, .050"/.026" t


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits all 1974 and earlier Rochester Quadrajet carburetors, also some later year truck and marine carburetors. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet. Rod Specifications:
Cruise diameter: .050"
Power tip diameter:.026"
Rod overall length: 2.465" - 2.480" Primary Rod Tech:
A 50B rod has a large diameter of .050" and a small diameter "power tip" of .026". The .050" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "B" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2550B
"J" 32J NOS Quadrajet  Primary Metering Rods, .032"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single medium length taper design “J”
Cruise diameter: .032"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 32J rod has a large diameter of .032" and a small diameter "power tip" of .026". The .032" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "J" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2532J-NOS
"J" 36J Quadrajet  Primary Metering Rods, .036"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications: Note: 36J is NOT stamped into rod. (No Markings on rod)
Single medium length taper design “J”
Cruise diameter: .036"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 36J rod has a large diameter of .036" and a small diameter "power tip" of .026". The .036" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "J" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2536J-NOS
"J" 40J NOS Quadrajet  Primary Metering Rods, .040"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single medium length taper design “J”
Cruise diameter: .040"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 40J rod has a large diameter of .040" and a small diameter "power tip" of .026". The .040" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "J" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2540J-NOS
"J" 54J Quadrajet  Primary Metering Rods, .054"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimensions are NOT stamped in rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single medium length taper design “J”
Cruise diameter: .054"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 54J rod has a large diameter of .054" and a small diameter "power tip" of .026". The .054" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "J" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2554J
"J" 56J Quadrajet  Primary Metering Rods, .056"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimension is NOT stamped in rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single medium length taper design “J”
Cruise diameter: .056"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 56J rod has a large diameter of .056" and a small diameter "power tip" of .026". The .056" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "J" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2556J
"K" 37K NOS Quadrajet  Primary Metering Rods, .037"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .037"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 37K rod has a large diameter of .037" and a small diameter "power tip" of .026". The .037" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2537K-NOS
"K" 38K NOS Quadrajet  Primary Metering Rods, .038"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .038"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 38K rod has a large diameter of .038" and a small diameter "power tip" of .026". The .038" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2538K-NOS
"K" 44K NOS Quadrajet  Primary Metering Rods, .044"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .044"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 44K rod has a large diameter of .044" and a small diameter "power tip" of .026". The .044" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2544K-NOS
"K" 44K Quadrajet / Dualjet Primary Metering Rods .044"/.026" ti


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .044"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) Note:
"44K" is not stamped into rod, this rod does not have any identification stamped into rod shaft. Primary Rod Tech:
A 44K rod has a large diameter of .044" and a small diameter "power tip" of .026". The .044" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2544K
"K" 46K NOS Quadrajet  Primary Metering Rods, .046"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .046"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 46K rod has a large diameter of .046" and a small diameter "power tip" of .026". The .046" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2546K-NOS
"K" 49K NOS Quadrajet  Primary Metering Rods, .049"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .049"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 49K rod has a large diameter of .049" and a small diameter "power tip" of .026". The .049" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2549K-NOS
"K" 50K NOS Quadrajet  Primary Metering Rods, .050"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .050"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 50K rod has a large diameter of .050" and a small diameter "power tip" of .026". The .050" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2550K-NOS
"K" 51K NOS Quadrajet  Primary Metering Rods, .051"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .051"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 51K rod has a large diameter of .051" and a small diameter "power tip" of .026". The .051" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2551K-NOS
"K" 52K NOS Quadrajet  Primary Metering Rods, .052"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .052"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 52K rod has a large diameter of .052" and a small diameter "power tip" of .026". The .052" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2552K-NOS
"K" 53K NOS Quadrajet  Primary Metering Rods, .053"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .053"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 53K rod has a large diameter of .053" and a small diameter "power tip" of .026". The .053" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2553K-NOS
"K" 54K NOS Quadrajet  Primary Metering Rods, .054"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “K”
Cruise diameter: .054"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 54K rod has a large diameter of .054" and a small diameter "power tip" of .026". The .054" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "K" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2554K-NOS
"L" 41L NOS Quadrajet  Primary Metering Rods, .041"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single short taper design “L”
Cruise diameter: .041"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 41L rod has a large diameter of .041" and a small diameter "power tip" of .026". The .041" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "L" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2541L-NOS
"M" 48M Quadrajet / Dualjet Primary Metering Rods .048"/.036" ti


Qty: 2 Rods - (OEM# 17056948) Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .048"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) (OEM# 17056948) Primary Rod Tech:
A 48M rod has a large diameter of .048" and a small diameter "power tip" of .036". The .048" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2548M
"M" 50M Quadrajet / Dualjet Primary Metering Rods .050"/.036" ti


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .050"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) Primary Rod Tech:
A 50M rod has a large diameter of .050" and a small diameter "power tip" of .036". The .050" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: Rod may or may not have size stamped on rod.…see more

Part Number
2550M
"M" 52M Quadrajet / Dualjet Primary Metering Rods .052"/.036" ti


Qty: 2 Rods - (OEM# 17056952) Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .052"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) (OEM# 17056952) Primary Rod Tech:
A 52M rod has a large diameter of .052" and a small diameter "power tip" of .036". The .052" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2552M
"M" 53M Quadrajet / Dualjet Primary Metering Rods .053"/.036" ti

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .053"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) (OEM# 17056953) Primary Rod Tech:
A 53M rod has a large diameter of .053" and a small diameter "power tip" of .036". The .053" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. "M" 53M Quadrajet / Dualjet Primary Metering Rods .053"/.036" tip, (later style)…see more

Part Number
2553M
"M" 54M NOS Quadrajet  Primary Metering Rods, .054"/.036"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single long length taper design “M”
Cruise diameter: .054"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 54M rod has a large diameter of .054" and a small diameter "power tip" of .036". The .054" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2554M-NOS
"M" 54M Quadrajet / Dualjet Primary Metering Rods .054"/.036" ti


Qty: 2 Rods - Used to tailor primary part throttle air/fuel enrichment . Fits...see more

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .054"
Power tip diameter:.036"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) Primary Rod Tech:
A 54M rod has a large diameter of .054" and a small diameter "power tip" of .036". The .054" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.036") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "M" primary metering rods have the same small diameter power tip (.036"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2554M
"P" 46P NOS Quadrajet  Primary Metering Rods, .046"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .046"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 46P rod has a large diameter of .046" and a small diameter "power tip" of .026". The .046" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2546P-NOS
"P" 47P NOS Quadrajet  Primary Metering Rods, .047"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .047"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 47P rod has a large diameter of .047" and a small diameter "power tip" of .026". The .047" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2547P-NOS
"P" 48P NOS Quadrajet  Primary Metering Rods, .048"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .048"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 48P rod has a large diameter of .048" and a small diameter "power tip" of .026". The .048" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2548P-NOS
"P" 57P NOS Quadrajet  Primary Metering Rods, .057"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .057"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 57P rod has a large diameter of .057" and a small diameter "power tip" of .026". The .057" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2557P-NOS
"P" 58P Quadrajet  Primary Metering Rods, .058"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimension is NOT stamped on rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .058"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 58P rod has a large diameter of .058" and a small diameter "power tip" of .026". The .058" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2558P
"P" 58P Quadrajet / Dualjet Primary Metering Rods .058"/.026" ti

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension stamped in rod indicates maximum diameter of taper. Quantity: 2 Primary Metering Rods for Rochester Quadrajet carburetors. Rod Specifications:
Cruise diameter: .058"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
58P is stamped into rod shaft.
Does NOT fit Quadrajets with Electronic Mixture Control Solenoid (MCS) Primary Rod Tech:
Rods have a large diameter and a small diameter "power tip". The larger diameter section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. A great way to fine tune your Q-Jet for better driveablity and fuel mileage.…see more

Part Number
2558P
"P" 59P NOS Quadrajet  Primary Metering Rods, .059"/.026"

New Old Stock (NOS) original Rochester Products primary metering rods. These original rods are no longer produced by Rochester Products and very difficult to find.  Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Dimension is stamped on rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .059"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 59P rod has a large diameter of .059" and a small diameter "power tip" of .026". The .059" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2559P-NOS
"P" 60P Quadrajet  Primary Metering Rods, .060"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimension is NOT stamped on rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .060"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 60P rod has a large diameter of .060" and a small diameter "power tip" of .026". The .060" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2560P
"P" 61P Quadrajet  Primary Metering Rods, .061"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimension is NOT stamped on rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .061"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 61P rod has a large diameter of .061" and a small diameter "power tip" of .026". The .061" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2561P
"P" 62P Quadrajet  Primary Metering Rods, .062"/.026"

Rochester Quadrajet primary metering rods are used to tailor primary part throttle air/fuel enrichment . Fits most 1975 and later non-electronic Rochester Quadrajet carburetors, except some truck and marine carburetors that use the early style rods. Rod dimension is NOT stamped on rod. Quantity: 2 Primary Metering Rods for Rochester Quadrajet and Dualjet carburetors. Rod Specifications:
Single full length taper design “P”
Cruise diameter: .062"
Power tip diameter:.026"
Rod overall length: 2.395" - 2.400"
Does NOT fit Quadrajets or Dualjets with Electronic Mixture Control Solenoid (MCS)   Primary Rod Tech:
A 62P rod has a large diameter of .062" and a small diameter "power tip" of .026". The .062" section of the rod is positioned in the metering jet during light throttle driving. During heavy acceleration, manifold vacuum decreases allowing the power piston to rise positioning the small diameter (.026") power tip in the metering jet.
Larger diameter rods will lean part throttle/cruise air fuel mixtures. All "P" primary metering rods have the same small diameter power tip (.026"). A great way to fine tune your Q-Jet for better driveablity and fuel mileage. Note: -
For additional in depth information on Primary Metering Rods (Go to the Primary Metering Rod Tech Info page  )…see more

Part Number
2562P
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