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Sierra 18-9815 Pilot Plate for MerCruiser Bearing Installation Tool Kit

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

18-9815
08/05/2036 12:10 AM
Sale Price

$18.76

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 18-9815 Pilot Plate is a precision marine service tool component designed to guide and align bearing drivers during installation and removal procedures on MerCruiser stern drive gear cases. This pilot plate is a direct replacement for Mercury Marine OEM part number 91-37324 and serves as a component of the Sierra 18-9820 Bearing Installation Tool Kit.

Used as part of a complete bearing service toolkit, the pilot plate ensures accurate alignment when working on MC-I, R-MR, Alpha One, Alpha One Gen II, Bravo One, and Bravo Two gear cases. It works in conjunction with other Sierra service tools including the driver rod (18-9835), mandrel (18-9816), and driver heads for precise, professional-grade bearing service.

Key Features:

  • Direct replacement for Mercury Marine OEM part number 91-37324
  • Compatible with MC-I, R-MR, Alpha One, Alpha One Gen II, Bravo One, and Bravo Two gear cases
  • Component of the Sierra 18-9820 Bearing Installation Tool Kit
  • Engineered to meet or exceed original Mercury Marine tool specifications
  • Designed for use with Sierra 18-9835 Driver Rod and associated driver heads

Sierra marine service tools are manufactured to meet or exceed OEM quality standards, providing professional technicians and DIY marine mechanics with reliable, accurate tools for stern drive maintenance and repair.

Great experience fast and user friendly

So far so good I'll wait to see if part is good and fits

I hope its the correct part!

Excellent

It was quick to order I just hope I get everything that I order in time.

all good so far

Very good

Thanks

Love autoplicity!

so far so good

It was great!!! AWESOME PRICES!!!!

Thank you for the quick turnaround from order to shipping the products I ordered

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