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Sierra 18-1824 Grommet Sleeve Water Pump Component for 20" Outboard Models

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

18-1824
08/04/2036 11:20 PM
Sale Price

$8.81

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-1824 is a replacement grommet sleeve designed for use in water pump assemblies on 20" shaft Johnson/Evinrude outboard motors. This grommet seals the extension sleeve within the water pump cooling system, helping to maintain proper water flow and prevent leaks at the sleeve junction.

Manufactured to Sierra's exacting quality standards, this grommet is built from durable, marine-grade rubber that resists the corrosive effects of salt and fresh water environments. It meets or exceeds the fit, form, and function of the original equipment part it replaces.

Key Features:

  • Direct replacement for Johnson/Evinrude OEM part number 349354
  • Designed specifically for 20" shaft model outboard engines
  • Marine-grade rubber construction for durability in harsh aquatic environments
  • Meets or exceeds original equipment quality standards
  • Essential component during water pump rebuild or impeller service

The Sierra 18-1824 grommet sleeve is also sold as a standalone replacement part and is included in various water pump repair kits for Johnson/Evinrude V4, V6, and V8 outboards. Always verify shaft length and engine model before ordering to ensure proper fitment.

Best price I could find on the internet and shipping time looks to be quick. Will update review when I receive product if any issues arise.

Easy to use

thank you

quick and efficient

As soon as I get the parts I will comment

Good price, the item was drop-shipped from the manufacture. I ordered it on a Friday and I got an e-mail on tuesday saying it was shipped.

Quick and simple

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