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Quicksilver 816575A4 Gear Housing Seal Kit for Mercury 200-250HP Outboards

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

816575A4
09/15/2036 6:47 PM
Sale Price

$36.62

In Stock (10+)

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Product Details

The Quicksilver 816575A4 Gear Housing Seal Kit is a genuine OEM replacement seal kit designed for Mercury outboard motors ranging from 200 to 250 horsepower. This comprehensive kit contains all necessary seals, O-rings, and gaskets required to properly reseal the lower unit gear housing on compatible Mercury and Mariner outboard engines.

Key Features:

  • Genuine Mercury Marine OEM part for guaranteed fit and performance
  • Complete seal kit includes all necessary components for gear housing service
  • Designed for Mercury 200HP, 225HP, and 250HP EFI and Optimax DFI models
  • Compatible with models featuring C-3 casting designation
  • Helps prevent water intrusion and gear oil leaks in the lower unit
  • Essential for routine lower unit maintenance and rebuilds

Applications: This kit fits Mercury V-200 3.0L EFI (serial T801000 and up), V-200 Optimax 3.0L DFI (G386496 and up), V-225 3.0L (D280813-G437999), V-225 EFI and Optimax models (various serial ranges), and V-250 3.0L EFI engines with C-3 casting. Verify fitment using your engine's model or serial number before ordering.

Cross References: Replaces Mallory 9-74208 and Sierra 18-8382. Also known as part numbers 26-816575A4, 62-1469, 2863-8101, and 28638101.

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