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Quicksilver 8M0103774 Port Side Exhaust Manifold Single Catalyst V8 MerCruiser EC

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

8M0103774
07/12/2036 9:51 PM
Sale Price

$937.04

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Quicksilver 8M0103774 is a genuine Mercury Marine OEM port side exhaust manifold engineered specifically for EC (Emission Compliant) catalytic V8 MerCruiser sterndrive and inboard engines. Designed for the 305, 350, and 377 CID (3.5L, 5.7L, and 6.2L) engine families on model year 2008 and newer applications, this manifold features a single catalyst design and is sold as a port side (left bank) unit only.

Key Features:

  • Port side only — designed exclusively for the left bank of V8 MerCruiser EC engines (order 8M0103773 for starboard side)
  • Single catalyst configuration — built for newer emission-compliant (EC) MerCruiser engine applications
  • Corrosion-resistant coatings — applied to internal coolant passages and exterior surfaces for extended service life
  • OEM specifications — produced to Mercury Marine factory tolerances for proper fit and optimal engine performance
  • Compatible engine families: GM V8 305, 350, and 377 CID MPI sterndrive and inboard engines, model year 2008 and newer
  • Supersedes legacy part number 879288A04

As a Quicksilver genuine factory part, the 8M0103774 ensures a direct-fit replacement with no modifications required. For a complete exhaust manifold and elbow kit covering both port and starboard sides, this manifold pairs with part number 8M0103773 (starboard). Always replace exhaust manifolds with a matching elbow assembly and fresh gaskets to maintain a leak-free system.

great so far

This item was priced very attractively and shipped promptly. It was ordered on Sunday,<br>June 10th and shipped the next day, arriving at my address on Tuesday, June 12th. A very<br>satisfacory buying experience for me.

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Great Place to shop for Auto Parts Very Fast shipping

First off I gotta say that my item arrived much quicker than expected. Funny thing is I ordered a part from another site a few days before I ordered the one from Autoplicity... and I received the Autoplicity item before the other item. In fact the other item hasn't arrived it. Plus the one I ordered from Autoplicty is significantly larger. The item arrived in perfect condition. Pretty impressed. This company is on my recommendations list for sure. They even offer a small reimbursement for writing review. Sheesh they deserve it.

I placed the order on Monday, and the package was delivered two days later, on Wednesday...and that was with FREE SHIPPING!!! It was also at the best price I could find. What more can you ask?

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