Garter Spring style Mercarb marine carburetor pump assembly comes with ethanol resistant pump cup to withstand todays fuel with alcohol / ethanol. Complete accelerator pump plunger assembly with heavy duty alcohol resistant garter spring cup. MADE IN THE USA.
Fits newer mercarb carburetors with 90 degree bend accelerator plunger stem.
Mercarb Marine carburetors that use this accelerator pump assembly:
1389-815397, 1389-9562A1, 1389-9563A1, 1389-9564A1, 1389-9670A2, 3304-9565A1, 3310-805924, 3310-806077, 3310-806080, 3310-806972, 3310-807312, 3310-807504, 3310-807764, 3310-861245, 3310-861448, 3310-864940, 3310-864942, 3310-864943, 3310-866140, 3310-866141, 3310-866142, 3310-866143
Not sure where to find your carburetor number? Click here to read artical on Carburetor Number Identification.
Note: The Mercarb pump cup diameter is .040" larger than the Rochester twojet pump cup. Not all blue accelerator pump cups on the market are resistant to todays new fuels, dont be mislead by the color, demand the best!
Dimensions:
Cup Diameter: .790"
OAL: 2.350"