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Sierra 18-1597 Water Pump Housing Screw for Johnson/Evinrude Outboards

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

18-1597
08/04/2036 11:21 PM
Sale Price

$8.28

1 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-1597 is a replacement water pump impeller housing screw designed for Johnson/Evinrude outboard engines. This fastener secures the impeller housing assembly and is a critical component in maintaining proper cooling system integrity on your outboard motor.

Sierra Marine is a market leader in aftermarket marine engine parts, and this screw is engineered to meet or exceed the original equipment manufacturer's specifications. It directly replaces OEM part number 302325 and is the same hardware used in Sierra's own water pump kit assemblies, such as the 18-3476 kit.

Key Features:

  • Direct OEM replacement — replaces Johnson/Evinrude part number 302325
  • Used to secure the impeller housing in water pump assemblies
  • Sold individually; water pump kits (e.g., Sierra 18-3476) include a quantity of 4
  • Manufactured to meet or exceed original equipment specifications
  • Compatible with Sierra water pump kits for Johnson/Evinrude outboards

When servicing your outboard's cooling system, replacing worn or damaged housing screws helps ensure a secure, leak-free assembly. Sierra's 18-1597 housing screw is the correct replacement hardware for Johnson/Evinrude water pump housing service.

The picture showed everything to install showed air bags and only tubing came. Very disappointed. Now I need to return it please.

ordering was painless

Just what I was looking 4.. Best price. Best brand. shopped ebay &amp; amazon.

Google search shows a $5 shipping, but actually shipping was much higher

groovy

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