Accelerator Pump Cup, 23/32", Ethanol Resistant/Fluoroelastomer
Our Part # 1071H

This heavy duty accelerator pump cup is resistant to the ethanol / alcohol found in today's gasoline. Easy to change. Great for both stock and performance carburetors. Correct your accelerator pump cup problems with this new pump cup.

Specs:
Actual measured OD: .700"
Center hole ID: .320"

Fits:
Various Holley carburetors

Holley  1904, 1908, 1920, 1931, 1960
Holley 2209, 2210, 2245

Holley 2280, 6280C
 

Instructions when replacing accelerator pumps:
It is very important that the accelerator pump bore is completely smooth. Today's fuels with ethanol have less lubrication and demand super smooth pump bore surfaces. Polish pump bore with crocus cloth as required. Rough pump bore surfaces will cause pump cup to stick to bore and tear or dislodge from plunger assembly.
Do not allow carburetor cleaner come in contact with pump assembly.
Coat outer edges of pump cup with a light coating of grease, if pump bore is not submerged in fuel.
Long term vehicle storage:
If vehicle is dormant and fuel bowl is allowed to go dry, pump cup has a much higher chance of sticking to pump bore. If bowl has run dry, fill fuel bowl with fuel before pumping accelerator pump assembly.