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Sierra 18-4572 Outer Wear Plate for Yamaha Outboard Water Pump

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

18-4572
07/15/2036 5:58 AM
Sale Price

$14.34

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Product Details

The Sierra 18-4572 Outer Wear Plate is a precision-replacement water pump component designed to meet or exceed original equipment manufacturer (OEM) specifications. This wear plate serves as the outer sealing surface within the water pump assembly, working in conjunction with the impeller to maintain proper coolant flow through your outboard engine's cooling system.

This part is a direct replacement for Yamaha OEM part number 6CV-44323-00 and is commonly included as a component in water pump repair kits for Yamaha outboard engines. Sourced from Sierra International, a trusted name in marine replacement parts, this plate is engineered for a precise fit and long-lasting performance.

Key Features:

  • Direct replacement for Yamaha OEM part number 6CV-44323-00
  • Meets or exceeds OEM specifications for fit, form, and function
  • Essential water pump cooling system component
  • Designed for use as a standalone replacement or as part of a water pump repair kit
  • Manufactured by Sierra International, a leading marine parts supplier

Regular water pump maintenance — including replacement of wear plates — is recommended every one to two years to protect your outboard engine from overheating and to ensure reliable cooling system performance.

Easy enough to order. Not big on product description but manufacture gave me the part # I needed.

Found the correct parts-- now we will see how good you guys are...

Went Smoothly

Great price

Good price and good selection.

description on item needs to be updated if it is possible thanks

Best price on internet. Local dealer wanted 325 dollars more for exact item. Great place to do business.

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