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Sierra 18-7817 Fuel Pump Diaphragm Rebuild Kit

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-7817
18 reviews
03/13/2036 11:27 AM
Sale Price

$16.71

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sierra 18-7817 is a comprehensive fuel pump diaphragm rebuild kit designed for Mercury, Mariner, Force, and Chrysler outboard engines. This complete kit provides all the essential components needed to restore proper fuel pump operation on 2-stroke outboards ranging from 30 HP to 275 HP.

Kit Contents:

  • Fuel pump diaphragms (rubber and plastic)
  • Base gasket (Sierra 18-0970)
  • Check valves and springs
  • Nylon push pin rivets
  • All necessary hardware for complete rebuild

Key Features:

  • Meets or exceeds OEM specifications
  • Direct replacement for Mercury 21-857005A1
  • Precision-engineered components for reliable performance
  • Includes multiple diaphragm styles for universal compatibility

Replaces OEM Part Numbers: Mercury/Mariner 21-42990A1, 21-42990A2, 21-42990A3, 21-42990A4, 21-42990A5, 21-42990A6, 21-42990A7, 21-42990A8, 21-42990A9, 21-42990A10, 21-42990A11, 21-857005A1; Chrysler/Force 21-42990A7, 21-42990A8, 21-42990A10; GLM 40290

This kit is essential for addressing fuel delivery issues such as stumbling at high RPM, difficulty starting, or poor acceleration caused by worn diaphragms and gaskets.

Order a climate control for my truck. Delivery was fast. Ran into a problem with my product but when I contacted customer support, they were fast in responding. Got the issue resolved pretty quick and it went very smooth.

OK

Pretty easy. A+

Fast and easy shopping.

Ok

It was simple and fast I would have to say I'll be back in the future to get more parts

Everything went according to plan. It was great!

They informed me that they did not have the part. It said they would help me find that part somewhere else. Called and they sent me to a boat supplies and that person didn't return my call. So haven't heard from anyone.

Autoplicity had the best price on the item i wanted and also has a large selection to choose from. And they also responded quickly to a question that i had asked

User friendly site and easy checkout

Quick and easy.

great price

great prices

Search is fast and easy. Prices are amazing!

Easy and fast!

Easy website to find parts and good prices

Easy going

Great product at the lowest price with fast delivery...what more can you want! Highly recommend.

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