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Sierra 18-3031 Water Pump Impeller for Honda Outboard Engines

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

18-3031
07/11/2036 11:14 AM
Sale Price

$36.00

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3031 is a premium-quality neoprene water pump impeller designed specifically for Honda outboard engines. Engineered to meet or exceed OEM specifications, this impeller ensures reliable cooling system performance in demanding marine environments.

Key Features:

  • 6-blade neoprene construction for durability and flexibility
  • Direct replacement for Honda OEM 19210-ZY3-003 and Mallory 9-45106
  • Precision-engineered to OEM specifications for optimal fit and performance
  • Compatible with Honda BF175, BF200, BF225, and BF250 outboard models
  • Used in Sierra water pump service kit 18-3285

Applications:

  • Honda BF175A (2007-2019)
  • Honda BF200 (2002-2019) - 200HP 4-stroke 6-cylinder
  • Honda BF225 (2002-2019) - 225HP 4-stroke 6-cylinder
  • Honda BF250 (2007-2019) - 250HP 4-stroke 6-cylinder

Regular impeller replacement is critical for maintaining proper engine cooling and preventing overheating damage. Sierra impellers are formulated with specialized compounds based on size and application to deliver superior performance and longevity in saltwater and freshwater environments.

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easy to order and quick. 4 stars vs 5: only need to cross reference the Motorcraft Part number to the vehicle part number which I used to search

Good so far...

Easy buying

Extremely easy to use your website. Everything came in as new condition and in a very quick manner. Thank you!!

Thank you for having goodmark products. Easy to use web page. I like the price and the fact you use paypal. Thank you.

Needs more info and better pictures.

easy checkout

very good response with order but it was the wrong part that i was needing. I will be returning both temp switches this week along with the temp sensor to see if you can match up the size and thread pattern that will fit inside the block where the temp se

Found correct item easily and checkout was fast. Once I received the item, it fit perfectly and works as expected.

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