Fuel Pump Kit for Mercury 21-42990A7, 21-42990A8, 21-857005A1
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SIERRAFuel Pump Kit for Mercury 21-42990A7, 21-42990A8, 21-857005A1


In stock online.
Model # 8919144 | Mfg # 18-7817UPC # 30999323019


Fuel Pump Kit for Mercury 21-42990A7, 21-42990A8, 21-857005A1

Name Value
Application Gasoline
Dimensions 6" x 7 1/4" x 1/2"
Type Fuel Pumps

Product Overview

Restore function to a tired fuel pump

For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers. Boaters and technicians can be assured a Sierra part will fit and restore function.

Fuel pump kits include gaskets, springs and diaphragms to rebuild mechanical fuel pumps used on Chrysler, Mercury and Mercury Sport Jet engines. Everything you need is included. We caution mechanics of the small spring loaded components in these pumps that can be lost during the rebuilding process.

Key Features

  • Sierra rebuild kits meet or exceed manufacturers’ specifications
  • Complete kits are designed to restore function
  • Backed by SeaStar Solutions Limited Two-Year Warranty

ApplicationOEM Part Number
Chrysler/Force/US Marine21-42990A8, 21-42990A7, 21-42990A7, 21-42990A10
Mercury Marine21-42990A9, 21-42990A8, 21-42990A7, 21-42990A10, 21-857005A1, 21-42990A6, 21-42990A5, 21-42990A4, 21-42990A2, 21-42990A11, 21-42990A1, 21-42990A3
Mercury Sport Jet21-857005A1, 21-42990A11

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.


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