Mercury – Seawater Pump Seal | MerCruiser Bravo Cooling System | Marine Polymer Seal | 8M0146317

Overview

When you spend your weekends running a big MerCruiser inshore and offshore, you get pretty tuned in to the little sounds and rhythms of the engine. You know when everything feels steady and effortless, and you know when something is just a touch off. A reliable seawater pump seal might not be the flashiest part on your boat, but it is one of those behind-the-scenes pieces that keeps everything running cool, smooth, and predictable. The Quicksilver 8M0146317 Seawater Pump Seal delivers that quiet confidence — the kind you feel the moment you push off the dock and your engine settles into that familiar, trustworthy hum.

Key Features

• Designed to seal and protect the seawater pump on select MerCruiser sterndrive and inboard engines
• Built from durable marine-grade materials for long-term resistance to heat and water intrusion
• Engineered to match original Mercury Marine specifications for fit and performance
• Helps maintain proper cooling flow by preventing leaks and protecting pump internals
• Compatible with MerCruiser 8.2L MPI Bravo platforms built in 2016

Engine & Boat Compatibility

• Fits MerCruiser 8.2L MPI Bravo engines (2016 models)
• Suitable for sterndrive boats designed for cruising, offshore fishing, watersports, and family boating
• Works with MerCruiser cooling system components designed for Bravo-series powerplants
• Ideal for larger hulls that rely heavily on consistent cooling performance under load

Performance & Practical Benefits

Anyone who runs a MerCruiser 8.2L knows the cooling system has zero room for compromise. When everything is sealed correctly, the flow stays strong, the temperature stays steady, and the engine responds the way it should — tight, smooth, and ready for long pulls or slow, controlled docking. The 8M0146317 pump seal is built with that exact purpose in mind.

Its fitment is precise, which means no awkward adjustments, no fighting with alignment, and no guessing whether it is seated properly. Once installed, it forms a secure barrier that keeps the seawater pump working efficiently by preventing unwanted air or water leaks. The result is a cooling system you can trust, even when pushing the engine on long summer runs or bouncing through choppy water.

Over time, even a small leak can lead to overheating, reduced performance, or accelerated wear. Replacing the seal with a genuine Mercury Marine part restores that “like-new” confidence and saves you from bigger headaches down the line. It is a simple part that pays for itself in peace of mind.

Why Buy OEM

With something as important as your cooling system, taking chances on aftermarket parts just does not make sense. This Mercury Marine part number 8M0146317 is built to the same tight tolerances as the original component that came with your engine. It is tested in real marine conditions and engineered to endure the heat, pressure, and vibration of a Bravo-series powerplant. Buying OEM means you are choosing the right fit the first time, longer service life, and fewer surprises out on the water. When a fellow boater asks what to use, this is exactly the kind of part you recommend without hesitation.

FAQ Section

Q1: Which Mercury engines does this seawater pump seal fit?

It fits MerCruiser 8.2L MPI Bravo engines manufactured in 2016.

Q2: What makes this part different from aftermarket versions?

It is built to Mercury’s exact specifications, ensuring proper sealing, durability, and long-term cooling system reliability.

Q3: How do I confirm it is the right replacement?

Check your engine model and year in your owner’s manual — if you have a 2016 8.2L MPI Bravo, this is the correct seal.

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

Yes, it is fully rated for all marine environments and resists corrosion and heat.

Q5: Is installation straightforward?

Most boat owners who handle routine maintenance will find installation simple, as long as they follow the manual’s instructions.