Description

Mercury MerCruiser / Quicksilver Exhaust Manifold – 8M0185794

Restore proper exhaust flow and cooling system operation with the genuine Mercury Marine / Quicksilver 8M0185794 Exhaust Manifold. This OEM cast-iron manifold is designed for MerCruiser GM-based V8 sterndrive and inboard engines using the dry-joint exhaust system, providing reliable exhaust gas routing while protecting the engine from water intrusion.

Built to Mercury Marine’s original equipment specifications, the manifold features corrosion-resistant coatings on both internal coolant passages and the exterior surface to withstand harsh marine environments.

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Key Features

• Genuine Mercury / Quicksilver OEM exhaust manifold

• Designed for MerCruiser dry-joint exhaust systems

• Durable cast-iron construction with corrosion protection

• Compatible for port or starboard installation

• Ensures proper exhaust gas flow and engine cooling

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Part Details

• OEM Part Number: 8M0185794

• Supersedes: 865735A02

• Material: Marine-grade cast iron

• Typical weight: 44 lb depending on configuration

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Compatible Mercury MerCruiser Engines

Commonly used on GM-based MerCruiser V8 engines with dry-joint exhaust systems (2002 and newer), including:

• 5.0L (305 CID) V8 engines

• 5.7L (350 CID) V8 engines

• 377 CID engines

• 6.2L MPI engines

These engines are typically found in MerCruiser sterndrive (MCM) and inboard (MIE) applications.

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Function

The exhaust manifold collects exhaust gases from the engine cylinders and routes them to the exhaust elbow and sterndrive exhaust system, while also allowing cooling water to circulate through the manifold to prevent overheating.

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Important Compatibility Note

Exhaust manifolds vary by engine model, cooling system type (dry joint vs wet joint), and serial number range. Always verify compatibility using the engine serial number before ordering.

Shipping: Ships same or next day for fast Canada wide shipping.