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Quicksilver 815921A20 Shift Shaft Bushing Assembly for MerCruiser Alpha One Gen II

Manufacturer

Quicksilver

<h3>About Quicksilver</h3><p><strong>Quicksilver</strong> has been a cornerstone of the marine industry since 1950, delivering the parts, accessories, and engine care products that keep boats running at their best. A division of Brunswick Corporation and closely aligned with Mercury Marine, Quicksilver has grown into one of the most trusted names on the water — offering more than 40,000 parts across a broad range of product lines designed for both the weekend boater and the seasoned marine professional.</p><p>What sets Quicksilver apart is its unique position as the premier supplier of Mercury Marine Original Equipment replacement parts, while simultaneously serving owners of nearly every major marine engine brand. Whether your vessel is powered by Mercury, Mariner, Honda, Yamaha, Evinrude/Johnson, or Suzuki, Quicksilver produces components engineered to fit and perform like the originals. This cross-brand compatibility, combined with factory-level quality standards, is why boaters worldwide have made Quicksilver their go-to source for maintenance and repair.</p><p>The Quicksilver catalog spans the full spectrum of marine maintenance needs. At its core are <a href="/7456-quicksilver-fuel-pump-6244">fuel pumps</a> and complete fuel pump and carburetor kit solutions that keep fuel delivery systems operating reliably under demanding on-water conditions. For those needing a broader fuel system overhaul, Quicksilver&apos;s lineup of <a href="/7456-quicksilver-fuel-pumps-201310">fuel pumps</a> covers outboard and sterndrive applications alike. Above the waterline, few components are as performance-critical as the prop, and Quicksilver&apos;s extensive range of <a href="/200673-propellers-quicksilver-7456">propellers</a> — from aluminum to stainless steel — gives boaters the ability to tune their vessel&apos;s performance to their exact needs. Rounding out the drivetrain, Quicksilver also offers precision-engineered <a href="/7456-quicksilver-drives-gearcases-transoms-200346">drives, gearcases, and transom components</a> that are essential for maintaining the mechanical heart of sterndrive and inboard systems.</p><p>Quicksilver products undergo rigorous testing and engineering validation — the result of decades of R&amp;D conducted alongside Mercury Marine&apos;s own engineering teams. The brand&apos;s commitment to quality means that each part meets or exceeds OEM specifications, giving do-it-yourself boaters and marine technicians alike the confidence that a Quicksilver repair will hold up season after season. From freshwater lakes to demanding saltwater environments, Quicksilver is built for wherever your adventures take you.</p>

Part Number

815921A20
09/12/2036 1:18 PM
Sale Price

$21.71

In Stock (10+)

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Product Details

The Quicksilver 815921A20 is a genuine OEM shift shaft bushing assembly designed specifically for MerCruiser Alpha One Generation II sterndrives with serial numbers 0L100040 and up. This critical component ensures smooth and reliable gear shifting operation in your outdrive system.

Key Features:

  • Genuine Mercury Marine OEM replacement part
  • Precision-engineered for exact fit and reliable performance
  • Designed for MerCruiser Alpha One Gen II stern drives
  • Compatible with serial numbers 0L100040 and higher
  • Manufactured to Mercury's rigorous quality standards

As a Quicksilver product, this bushing assembly is backed by over 65 years of marine industry leadership and is manufactured to the same exacting standards as the original equipment. The Quicksilver brand is recognized as the premier supplier of Mercury Marine replacement parts, delivering uncompromising quality through rigorous testing and design processes. This shift shaft bushing assembly is essential for maintaining proper gear engagement and extends the service life of your sterndrive system.

OEM Part Numbers: 23-815921A20, 710-23-815921A20 | Aftermarket Cross-Reference: GLM 21017

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