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Sierra 18-2100K Gimbal Bearing and Seal Kit for MerCruiser Stern Drives

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

118-2100K
06/02/2036 10:37 PM
Sale Price

$78.30

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-2100K is a greasable gimbal bearing and seal kit designed for MerCruiser stern drive applications. This comprehensive service kit provides reliable replacement components for maintaining proper drive system alignment and preventing water intrusion in the gimbal housing.

Kit Contents:

  • Heavy-duty gimbal bearing (Sierra 18-2100)
  • Oil seal (Sierra 18-2094)

Key Features:

  • Greasable design for extended service life
  • Engineered to meet or exceed OEM specifications
  • Heavy-duty construction for harsh marine environments
  • Direct replacement for MerCruiser factory parts

Applications: Fits MerCruiser models 1, R, MR, and Alpha One stern drives from 1974-1997. This kit provides essential components for gimbal housing service and transom assembly maintenance.

OEM Cross-References: Replaces MerCruiser 30-60794A2, 30-60794A4, 30-879194A02, and Mallory 9-72426. Sierra marine parts are manufactured to rigorous quality standards to ensure reliable performance in demanding marine applications.

Excellent transaction ! Very fast shipping. No problems. Defiantly recommend and will purchase from them again.

First time buying anything eud rather rate after i receive my parts but the easy order experience an quick delivery dates had to give u a 4star

Carl L Scoggins Jr

Looks to be a great price

Easy and fast

Thanks for making ordering so quick and easy!

Needed assistance with out Tax Certificate and received immediate response. Exceptional service!

Easy to purchase, received my product rather quickly and on time.

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