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Sierra 18-99147 Fuel Pump Gasket Replaces Yamaha 6G1-24431-01

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-99147
08/04/2036 12:47 PM
Sale Price

$10.23

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-99147 is a replacement fuel pump gasket engineered for Yamaha outboard motors. Designed as a direct replacement for Yamaha OEM part number 6G1-24431-01, this gasket provides a reliable, leak-free seal at the fuel pump mounting interface, restoring proper fuel system integrity.

Sierra is one of the marine industry's most trusted names, with parts engineered to meet or exceed original equipment specifications. The 18-99147 gasket is manufactured from materials capable of withstanding continuous fuel exposure and the demanding conditions of the marine environment.

Key Features:

  • Direct replacement for Yamaha OEM part number 6G1-24431-01
  • Engineered to meet or exceed OEM fit, form, and function
  • Fuel-resistant materials for long-lasting, leak-free performance
  • Backed by Sierra's industry-leading customer satisfaction warranty
  • Drop-in fitment — no modifications required

Sierra part 18-99147 is the correct service replacement gasket when rebuilding or servicing the fuel pump on applicable Yamaha outboard engines. Always inspect and replace the fuel pump gasket any time the pump is removed to ensure a proper seal and prevent fuel leaks.

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Ive ordered car parts from here before and its always been a good experience. Even when i was sent an incorrect part the customer service quickly fixed my problem

Quick easy ordering process

Very easy to use and the price is right!

Love it. Easy to navigate.

Fast

Shipping was super fast! Navagation through your site is simple and easy!

So far so good. I just hope the product is good

This item was priced very attractively and shipped promptly. It was ordered on Sunday,<br>June 10th and shipped the next day, arriving at my address on Tuesday, June 12th. A very<br>satisfacory buying experience for me.

Very easy hope they are the right parts!

Ok so far.

Extremly fast shipping - Ordered and shipped in less than 12 hours. Cheapest prices I could find after thorough searching. They beat the guys with free shipping.

prices are good. After I paid it took them 5 days to ship the order. Communication is not very good with autoplicity.

Amazing prices

Easy to use website

Finding what I wanted and price was all good...but after purchasing the item I was not given an estimate on the delivery date

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