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Upgrade your Rochester 4G/4GC carburetor with our new high performance ethanol resistant Four-Jet accelerator pump assemblies and accelerator pump cups.
Note: There are several versions of ethanol "Blue" accelerator pump cups, we only sell the ones that work the best.

There are 2 different diameter accelerator pump cups 21/32" and 3/4". Identify the correct pump assembly by matching your carburetor number. If carburetor number is not know or available, measure the cup diameter and overall (tip to tip) length of your old pump and select closest match.

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Accelerator Pump Cup, 3/4", Double Lip Ethanol Resistant


Used in large bore 2 barrel Rochester 2G, 2GC, 2GE and 2GV carburetors....see more

3/4" accelerator pump cup is used in large bore 2 barrel Rochester 2G, 2GC, 2GE, 2GV and Rochester 4G carburetors. Note:…see more

Part Number
1012A
Accelerator Pump Return Spring-

Fits:
Carter RBS carburetors.
Carter WCD, WGD carburetors.
Carter BBD carburetors.
Carter YF, YFA carburetors.
Carter WCFB carburetors.
Carter AFB…see more

Part Number
1040B
Accelerator Pump-  "Double Lip" Cup, 21/32", Ethanol Resistant


Accelerator pump cup is used in large bore 2 barrel Rochester 2G, 2GC, 2GE and 2GV carburetors and Quadrajet carburetors....see more

Fits:
Rochester 2G, 2GC, 2GE and 2GV carburetors
Rochester 4G carburetors
Rochester Quadrajet carburetors
Carter RBS carburetors This pump cup is…see more

Part Number
1012
Check Balls / Plug,  5 pack of 1/4 lead balls

Lead 1/4" check ball / plug. Quantity: 5 Balls…see more

Part Number
1022G
Check Balls / Plug,  5 pack of 3/16 lead balls

Lead 3/16" check ball / plug. Quantity: 5 Balls
OEM # 7001638, 7002814…see more

Part Number
1022F
Check Balls, Accelerator Pump, 5 pack of 3/16 aluminum balls


Used in the accelerator pump system as a one-way check valve....see more

Aluminum steel 3/16" ball is used in the accelerator pump system as a one-way check valve. Replaces original check ball…see more

Part Number
1022A
Check Balls, Accelerator Pump, 5 pack of 3/16 steel balls

Chrome steel 3/16" ball is used in the accelerator pump system as a one-way check valve. Replaces original check ball…see more

Part Number
1022
Check Balls, Accelerator Pump, 5 pack of 5/32 aluminum balls


Used in the accelerator pump system as a one-way check valve....see more

Aluminum 5/32" ball is used in the accelerator pump system as a one-way check valve. Replaces original check ball in…see more

Part Number
1022C
Check Balls, Accelerator Pump, 5 pack of 5/32 steel balls


Used in the accelerator pump system as a one-way check valve....see more

Steel 5/32" ball is used in the accelerator pump system as a one-way check valve. Replaces original check ball. Quantity: 5…see more

Part Number
1022B
Duration Spring for Accelerator Pump (Long)


Duration spring is located on accelerator pump assembly between the pump cup and the retainer. The duration spring is used as a safety valve that compresses when the throttle is opened quickly....see more

Specifications:
Relaxed Length: 1.90"
Compressed Length: .465"
Outside Diameter: .540"
Inside Diameter: .455"
Wire Diameter: .043" Quantity: 1 Duration spring is located…see more

Part Number
1041
Duration Spring for Accelerator Pump (Short)

Specifications:
Relaxed Length: 1.60"
Compressed Length: .275"
Outside Diameter: .540"
Inside Diameter: .470"
Wire Diameter: .039" Quantity: 1 This spring is recommended…see more

Part Number
1041E
Pump Discharge Needle - OEM # 7001674

Called pump discharge needle or pump check needle valve. Fits:
Rochester Fourjet 4G carburetors.
Rochester H, HV carburetors.
Holley AA-1, 852,…see more

Part Number
1027
Pump Inlet Screens

Replacement metal filter screen/strainer for accelerator pump. Quantity: 5 screen
Screen Diameter: .375" - 3/8"
Screen thickness: .010" OEM Rochester #7001604 Fits:
Rochester…see more

Part Number
1041D
Return Spring for Accelerator Pump


Return spring is used below the accelerator pump plunger to return plunger to up position after use....see more

Dimensions:
Overall length: 1.90"
Spring OD: .440"
Spring ID: .385"
Wire diameter: .025" Quantity: 1 spring Return spring is used below the accelerator pump plunger to…see more

Part Number
1040
Rochester 4G Accelerator Pump Assembly, 21/32" Ethanol Resistant


Designed to withstand todays fuel with alcohol / ethanol. Comes with highest quality...see more

21/32" Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol / ethanol. Comes with highest quality…see more

Part Number
1007C
Rochester 4G Accelerator Pump Assembly, 21/32" Ethanol Resistant


Designed to withstand todays fuel with alcohol / ethanol. Comes with highest quality...see more

21/32" Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol / ethanol. Comes with highest quality…see more

Part Number
1007B
Rochester 4G Accelerator Pump Assembly, 21/32" Ethanol Resistant


Designed to withstand todays fuel with alcohol / ethanol. Comes with highest quality...see more

21/32" Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol / ethanol. Comes with highest quality…see more

Part Number
1007A
Rochester 4G Accelerator Pump Assembly, 3/4" Ethanol Resistant (


Designed to withstand todays fuel with alcohol / ethanol. Comes with highest quality...see more

3/4" Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol / ethanol. Comes with highest quality…see more

Part Number
1007D
Rochester 4G Accelerator Pump Assembly, 3/4" Ethanol Resistant (


Designed to withstand todays fuel with alcohol / ethanol. Comes with highest quality...see more

3/4" Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol / ethanol. Comes with highest quality…see more

Part Number
1007E
Rochester Accelerator Pump Discharge "T" Guide - (5 Pack)

Rochester accelerator pump discharge "T" guides. OEM # 7003838
Quantity: 5 Pak
Length: .570"
Width: .315"
Thickness: .045" Rochester accelerator Pump…see more

Part Number
1025B
Rubber Accelerator Pump Shaft Boot - OEM # 7006372


Fits on Rochester 4G accelerator pump shafts to seal out dust and dirt....see more

Rubber Accelerator Pump Shaft Boot fits on Rochester 4G accelerator pump shafts to seal out dust and dirt.
Quantity: 1…see more

Part Number
1026
Spring Retainer for Accelerator Pump Plunger


Retainer is used to hold accelerator pump plunger spring in place....see more

Replacement retainer is used to hold accelerator pump plunger spring in place.…see more

Part Number
1021
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