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Sierra 18-3483 Marine Water Pump Housing Replacement

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

18-3483
08/04/2036 11:20 PM
Sale Price

$23.97

3 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 18-3483 is a replacement water pump housing designed for marine outboard and sterndrive cooling systems. The water pump housing is a critical component of the engine's raw water cooling circuit, encasing the impeller and directing water flow to prevent overheating.

Over time, water pump housings can wear, crack, or corrode — reducing cooling water flow and increasing the risk of engine overheating. Replacing a worn or damaged housing restores proper water pressure and flow to keep your engine running at safe operating temperatures.

Key Features:

  • Direct replacement water pump housing for compatible marine engines
  • Engineered to meet or exceed OEM specifications and fitment standards
  • Manufactured by Sierra International, a trusted name in aftermarket marine parts
  • Designed to work with Sierra and OEM-compatible impellers, wear plates, and seals
  • Durable construction built to withstand the harsh marine environment

Sierra International has been producing premium-quality aftermarket marine replacement parts for decades, with a catalog covering thousands of components for major engine brands. The 18-3483 water pump housing is sold as a standalone replacement part and is ideal for use during a water pump service or rebuild.

The Mobil app SUCKS. After three (3) attempts to order this part, I had to wait until I was home to order it with my laptop.

Quick and easy.

Price was great although shipping was a little higher than other vendors. The status of the order online always showed as order passed to the warehouse so I had to call to find out what was happening with the order. Later that day the item arrived. Overall I'm happy with the service.

Not bad.. Except for one I was on your website the other day and I was going to order but I never did and I went on today to do that same order in the shipping prices Were double I don't understand why

good

Fast, easy &amp; good prices

So far so good!

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