My Account
Shopping Cart

Quicksilver 865615Q07 Serpentine Belt for MerCruiser 454/502 Mag MPI Bravo Engines

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

865615Q07
09/13/2036 1:20 PM
Sale Price

$112.99

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 865615Q07 is a genuine OEM serpentine belt designed specifically for MerCruiser big block marine engines. This 119.4 cm (47-inch) belt is engineered to deliver reliable performance and proper tension for the alternator, power steering pump, and water pump systems on 454 and 502 cubic inch displacement engines.

Key Features:

  • Genuine Mercury Marine/Quicksilver OEM part - not aftermarket
  • Precision-engineered for MerCruiser 7.4L (454 CID) and 8.2L (502 CID) Mag MPI engines
  • Length: 119.4 cm (47 inches)
  • Compatible with metal 5-3/4 inch diameter power steering pump pulley
  • Designed for Bravo sterndrive applications
  • Backed by Mercury Marine 1-year factory warranty

Engine Compatibility:

  • 454 Mag MPI (1998-2001, Serial Numbers OL010029-OM024999)
  • 454 Mag MPI Horizon MIE (1998-2001, Serial Numbers OL002200-OL674000)
  • 502 Mag MPI (1998-2001, Serial Numbers OL017000-OM024999)
  • 7.4L MPI (1998-2001, Serial Numbers OL010003-OM024330)
  • 7.4L MPI MIE (1998-2001, Serial Numbers OL002006-OM025999)
  • 8.2L MPI MIE (1998-2001, Serial Numbers OL002450-OL674200)
  • 350 Mag Alpha (2000-2004, Serial Numbers OL619000 and up)

Cross-Reference Part Numbers:

  • OEM: 57-865615Q07, 57-865615007, 57-8638767, 57-861050, 865615007
  • Sierra: 18-15103

This serpentine belt is a critical component for maintaining proper engine accessory operation. Regular inspection and replacement of worn belts prevents damage to alternators, pumps, and other driven components. When installing, ensure the belt is routed correctly according to your engine's belt routing diagram, and that proper tension is achieved for optimal performance and longevity.

Hope it fits.

No issues. Received in timely manner

So far good

I received my order in 2 days. I couldn't believe it. I would order from them again.

Quick and easy I would recommend anyone to this program

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