My Account
Shopping Cart

Quicksilver 99960 Heat Exchanger End Cap Gasket 4 Inch

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

99960
09/15/2036 4:01 PM
Sale Price

$9.81

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Quicksilver 99960 (also known as 27-99960) is a genuine OEM heat exchanger end cap gasket designed for Mercury MerCruiser stern drive engines. This 4-inch gasket provides a critical seal for the heat exchanger end cap, preventing coolant leaks and ensuring proper engine cooling system operation.

Key Features:

  • Genuine Mercury Quicksilver OEM part for guaranteed fitment and quality
  • 4-inch diameter heat exchanger end cap gasket
  • Designed for MerCruiser 3.7L engines (models 470 and 485)
  • Precision-manufactured to factory specifications
  • Essential component for heat exchanger maintenance and rebuild

This gasket is a direct replacement for worn or damaged heat exchanger end cap gaskets and should be replaced whenever the heat exchanger is serviced. Cross-references to Sierra International part number 18-0389 and GLM 31830. Mercury Quicksilver parts are backed by a 1-year factory warranty against defects in materials and workmanship.

Easy to order on the website. Order was received in a timely fashion

The customer service was good.

fast & accurate...BoatiD sucked by the way

Super Experience

Through Autoplicity, I was able to get a significant deal on a motorcycle jacket that otherwise would have been 100 or more dollars. I am very content to have found the deal through Autoplicity.

Great company

great

Second time using this site for parts and they do a solid job all around!

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy