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Quicksilver 864908A1 6-Inch Dry Joint Riser Kit Standard Raw Water Cooling MerCruiser

Manufacturer

Quicksilver

<p>Since 1950, Quicksilver has been delivering premium marine parts, accessories, and lubricants that set the standard for quality and performance on the water. As the premier supplier of Mercury Marine original-equipment parts and accessories, Quicksilver occupies a unique position in the marine aftermarket industry—it's the only marine brand manufactured and recommended by an original-equipment manufacturer.</p> <h3>Engineering Excellence Backed by Mercury Marine</h3> <p>What sets Quicksilver apart from other aftermarket brands is its direct connection to Mercury Marine's engineering expertise. No aftermarket company comes close to Quicksilver's level of research and design, and literally millions of hours have been spent on fired-engine testing and analysis. This rigorous development process ensures that every component meets the exacting standards required for marine environments, where reliability isn't just a preference—it's essential.</p> <p>Quicksilver offers the widest range of premium replacement parts and lubricants for Mercury engines and drives in the marine industry, while their expertise makes Quicksilver aftermarket parts and lubricants outstanding choices to service most major marine engine brands. Whether you're maintaining a Mercury, Yamaha, Honda, or Suzuki outboard, Quicksilver provides OEM-quality solutions that fit and function like the original components.</p> <h3>Comprehensive Product Range for Every Marine Application</h3> <p>From critical propulsion components to routine maintenance items, Quicksilver covers the full spectrum of marine parts needs. Their <a href="/200836-quicksilver-propellers-quicksilver-7456">propeller selection</a> represents decades of hydrodynamic research, offering precision-engineered designs that maximize thrust, fuel efficiency, and handling across different hull configurations and engine combinations.</p> <p>For fuel system reliability, <a href="/200446-fuel-pumps-kitscarburetor-kits-quicksilver-7456">Quicksilver fuel pumps and carburetor kits</a> deliver consistent performance even in demanding marine conditions where ethanol-blended fuels and temperature extremes can compromise inferior components. The brand's <a href="/200835-quicksilver-manifoldsriserselbows-quicksilver-7456">exhaust manifolds, risers, and elbows</a> are engineered specifically to handle the corrosive marine environment, featuring materials and coatings that resist saltwater degradation.</p> <p>Cooling system maintenance becomes straightforward with <a href="/2208-engine-water-pump-quicksilver-7456">Quicksilver water pumps</a> and impeller kits designed for easy installation and reliable operation. Regular impeller replacement is one of the most critical preventive maintenance tasks for any marine engine, and Quicksilver kits include all necessary gaskets and components for professional-grade results.</p> <p>The brand's <a href="/200382-external-engine-parts-quicksilver-7456">external engine parts</a> portfolio ensures that boat owners and marine technicians can source everything from mounting hardware to trim system components with confidence in fit and durability.</p> <h3>Quality You Can Trust</h3> <p>Quicksilver has earned a loyal following by providing the highest quality products for more than 60 years, and consumers consider it one of the most trusted brands in the markets it serves. With over 40,000 parts across 12 product lines, Quicksilver products can be found throughout the world, supporting recreational boaters, commercial operators, and marine service professionals alike.</p> <p>This commitment to quality extends beyond parts to include specialized marine lubricants, fuel additives, and maintenance products formulated specifically for the unique demands of marine engines. When you choose Quicksilver, you're buying performance, protection, and peace of mind—qualities that matter when you're miles from shore or simply want to maximize your time on the water.</p>

Part Number

864908A 1
06/23/2036 9:30 PM
Sale Price

$833.17

In Stock (10+)

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Product Details

The Quicksilver 864908A 1 is a genuine OEM 6-inch exhaust riser extension kit designed for MerCruiser stern drive engines using dry joint exhaust manifolds with standard (raw water) cooling. This kit raises the exhaust elbow height by 6 inches, helping to reduce the risk of water backing up through the exhaust system and into the engine.

Engineered specifically for 14° dry joint risers where the bolt is either 5-3/4" or 7-1/2" long, this kit is the correct replacement for "Warm Riser" raw water-cooled applications. Compatible engines include the 350 MAG, 357 MAG, 383 MAG Stroker, 4.3L, 5.0L, 5.7L, and 6.2L V-6 and V-8 MerCruiser configurations using 7° or 14° risers.

Kit Includes:

  • 2 × 6" Cast Iron Spacer Risers
  • 2 × Restricted Gaskets
  • 2 × Full Flow Gaskets
  • 8 × .375-16 × 7.50" Bolts
  • 8 × .375-16 × 1.00" Bolts
  • 8 × .375-16 Washers
  • 6 × .250-20 × .625" Hex Screws
  • 2 × .250-20 × .375" Hex Screws
  • 4 × Pipe Plugs
  • 2 × Brackets

Key Features:

  • Genuine OEM Quicksilver / Mercury Marine part
  • 6-inch height extension for dry joint exhaust manifold risers
  • Designed for standard (raw water) cooling — RWC configuration
  • Fits 2004–2016 MCM V-6 and 2002–2016 MCM V-8 Non-EC engines, and MIE V-8 Non-EC engines
  • All hardware and gaskets included for raw water-cooled installations
  • Note: Additional block-off gaskets required for closed cooling (fresh water) applications

Replace gaskets in the exact configuration they were removed from to ensure a proper seal. Genuine Quicksilver exhaust riser kits meet Mercury Marine's original engineering standards for reliable, long-lasting performance.

easy peasy

fast service and got what I ordered.

Ordering online was easy. Got exactly what I ordered. Just living in Hawaii shipping is a bit slow on bigger items, but that's normal.

Good experience

Good

All good so far

Very good price on a part that is hard to find

Good price, easy to calculate shipping without going through checkout. Prompt tracking info and shipping.

Thanks Autoplicity you had the best prices I could find, fast shipping, and everything I ordered was exactly what I was looking for! Great Customer Service!

Price was much lower than any other parts dealer. Even with standard shipping, the parts arrived in a couple of days. Would use autoplicity again. Absolutely no problems.

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Thanks - Great Product. Fast Shipping. Plus they answer the phones!

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Easy to order

really easy

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