18-7818-1 Fuel Pump Kit for Mercury 21-42909A3 21-42909A4


Restore function to a tired Mercury fuel pump

Sierra offers parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of the marine industry. To save the time of researching and sourcing individual parts, Sierra packages all the required parts to rebuild a fuel pump used on many 70hp—115hp outboards. Each fuel pump kits include gaskets, springs and diaphragms to rebuild a mechanical fuel pump. Use caution, small spring loaded components in these pumps can be lost during the rebuilding process. Boaters and technicians can be assured a Sierra part will fit the first time and restore function to OEM standards

Key Features

18-7818-1 Application Guide

Application OEM Part Number
GLM 40280
Mallory 9-37754
Mercury Marine 42909A4, 42909A3, 42909A2, 42909A1

The Sierra Engine Parts Selector

In addition to fuel pump rebuild kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, model and year of manufacture.