Mercury – Quicksilver Exhaust Manifold | MerCruiser V8 Series | Cast Iron | 8M0185794

Overview

There’s a certain comfort that settles in when you know your engine is built on parts that don’t quit. That’s what this Mercury Marine part brings to the table. Out on open water, whether you’re cruising toward your favorite fishing spot or easing back into the slip after a long day, you want to trust every beat of your V8. This exhaust manifold delivers that steady confidence — the kind you feel in your hands, in the helm, and in the quiet moments when the boat just hums the way it should.

Key Features

• Designed for V8 MerCruiser sterndrive and inboard engines using dry joint exhaust systems
• Cast iron construction built for heat stability and long-term strength
• Smooth factory finish for consistent performance and clean fitment
• Fits both port and starboard sides of the engine
• Includes gasket for proper sealing and installation
• Engineered to meet strict Mercury Marine part number 8M0185794 specifications

Engine & Boat Compatibility

• Compatible with General Motors–based MerCruiser V8 engines: 305, 350, and 377 cubic inch models
• Fits model year 2002 and newer MerCruiser engines with dry joint exhaust systems
• Common on cruisers, sport boats, bowriders, performance runabouts, and family weekend boats
• Suitable for sterndrive and inboard configurations requiring a matched exhaust manifold

Performance & Practical Benefits

A good exhaust manifold doesn’t call attention to itself — it just works. This one holds a tight seal, keeps exhaust moving the way it should, and stays steady even when temperatures climb. You’ll notice how clean the engine runs and how smoothly the boat responds under throttle. Installation feels straightforward and familiar, thanks to the precise fit Mercury is known for. With its corrosion-resistant cast iron body, the manifold holds up in both freshwater and saltwater environments, giving you dependable performance season after season.

Why Buy OEM

When you’re keeping a boat in top shape, cutting corners rarely pays off. A genuine Mercury Marine part ensures you get the exact fit, the right flow path, and the long-term durability the engine was designed around. You avoid the guesswork that comes with aftermarket variations, and you get a part that protects your investment instead of threatening it. Think of it like advice from a fellow boater: stick with the part that was built for your engine, and you’ll spend more time on the water and less time troubleshooting.

FAQ

Q1: Which Mercury engines does the Quicksilver Exhaust Manifold fit?

It fits select MerCruiser V8 sterndrive and inboard engines using dry joint exhaust systems, including 305, 350, and 377 cubic inch models.

Q2: What makes this different from aftermarket options?

This Mercury Marine part is built to factory specifications, giving you the exact flow, alignment, and durability your engine expects.

Q3: How do I know if this is the correct replacement?

Match your existing part number or check your owner’s manual. If your engine uses a dry joint exhaust system, this is likely the right fit.

Q4: Can this be used in both saltwater and freshwater?

Yes, the cast iron construction handles both environments when paired with proper maintenance.

Q5: Is installation straightforward?

Most boat owners familiar with basic engine service find the fit clean and predictable, especially with the included gasket.