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Sierra 18-45713 Water Pump Impeller for Johnson F4 Pumps

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

18-45713
06/03/2036 11:44 PM
Sale Price

$46.96

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Usually delivered within 2 days

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Fitment guaranteed

Product Details

The Sierra 18-45713 is a premium replacement water pump impeller designed for marine engine cooling systems. This high-quality impeller serves as a direct replacement for Johnson pump part number 09-810B and 09-810B-1, ensuring reliable performance in a variety of marine applications.

Key Specifications:

  • 6-blade flexible impeller design for optimal water flow
  • Outside diameter: 2 inches (50.8mm)
  • Inside diameter: 0.47 inches (12mm)
  • Width: 0.87 inches (22mm)
  • Pin drive shaft configuration
  • Neoprene/MC97 compound construction for cooling system applications

Cross-Reference Part Numbers:

  • Johnson: 09-810B, 09-810B-1
  • Jabsco: 653-0001, 18653-0001
  • Mallory: 9-45713
  • Yanmar: X08810B, 128397-42200

This impeller is engineered for Johnson F4 series pumps including F4B-8, F4B-9, and related models. Suitable for general water-pumping duties such as engine cooling, water transfer, wash down, and bilge pumping applications. Regular impeller replacement is critical for maintaining optimal engine cooling system performance and preventing costly engine damage from pump failure.

Products specifications

Fits with

F4B Pump

Replaces

Johnson Pump: 09-810B

Fast shipping, great communication! Best price around.

good

Thanks

Great so far

good ,quick

Good price

quick easy checkout and the cheapest shipping by far

Very easy. Tried O'Reilly's and that was a pain. I'm ordering from Australia.

I ordered a Thule 9001 order number 27522 bike rack for my vehicle late Monday evening and received the product on Friday. Quick shipping with the free shipping option. Very happy with purchase and with autoplicity! Will def order from them again! Also the price was 30 to 40 bucks cheaper with autoplicity.

Smooth transaction through and through

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