Rochester 4GC accelerator pump assembly.

Complete with new springs and retainer.  The bottom spring is stainless steel to resist rust and corrosion.

This is a modern pump assembly for improved fuel delivery on acceleration.  The pump has a crimped on retainer to keep it from pullout out of the pump shaft.

Perfect replacement/upgrade from a stock pump for all applications.

It will replace all stock accelerator pumps in any year Rochester 4GC four barrel carburetor that uses the 3/4" diameter pump.  Make sure to measure before ordering as we have the smaller  21/32" pump available in another auction.

The seal on the pump is grade five fluoroelastomer and fine in all modern fuel blends, even E-85, straight alcohol or methanol.