Mercury – Water Pump Repair Kit | Cooling System Service | Composite & Marine-Grade Metals | 8M0155395

Overview

Anyone who’s spent enough time on the water knows how quietly critical the water pump is. You rarely think about it—until the day something goes wrong. That’s why having a dependable repair kit is more than routine maintenance; it’s peace of mind. The Quicksilver 8M0155395 Water Pump Repair Kit gives you that confidence. Whether you’re cruising a calm river at sunrise or pushing through afternoon chop on the way back in, you’ll know your engine is getting the steady, reliable cooling it needs to run right.

Key Features

• Complete water pump repair kit designed for 4–60 horsepower Mercury FourStroke outboards.
• Includes impeller, impeller key, hardware, washers, gaskets, wear plate, and housing/cup.
• Marine-grade materials built to withstand heat, water exposure, and constant rotation.
• Precision-shaped impeller delivers consistent water flow and cooling performance.
• Designed to meet or exceed Mercury Marine original equipment standards.
• Straightforward installation using basic tools.

Engine & Boat Compatibility

This Mercury Marine part is compatible with:

• Select Mercury FourStroke outboards from 4 horsepower to 60 horsepower
• Applicable for engines with serial numbers 0R411838 and above
• Commonly used on:
  • Aluminum fishing boats
  • Jon boats
  • Inflatable tenders
  • Small pontoons
  • Compact center consoles
  • Utility boats and light-duty workboats

If you run a smaller FourStroke engine, this is likely the kit designed specifically for your cooling system.

Performance & Practical Benefits

When a water pump is healthy, you can feel it in the way your engine behaves. Temperatures stay steady. Acceleration feels smooth. Long idle periods don’t make you nervous. The 8M0155395 kit restores that confidence by refreshing every wear component inside the pump.

The impeller fits tightly inside the housing, flexing just enough to deliver a strong, steady flow of water at every RPM. The fresh gaskets seal everything down cleanly, and the new wear plate gives the impeller a smooth surface to ride on—no grinding, no slipping, no hot spots. Your engine gets the cooling it needs to stay protected, and you get to enjoy the day without wondering if your temperature alarm is about to sound.

And since the kit is engineered to Mercury’s own specifications, installation feels natural. Every piece seats securely, and the housing aligns exactly the way it should. It’s the kind of precision that saves you time and prevents headaches.

Why Buy OEM

Choosing a genuine Mercury part means you’re choosing:

• Components engineered specifically for Mercury FourStroke outboards
• Long-term durability in harsh marine environments
• Cooling performance you can trust on long runs or shallow-water idling
• A perfect fit with no guessing or modification
• Better protection than generic kits that may skip critical pieces

When you’re depending on your outboard to get you to and from the water safely, OEM is simply the smarter, more reliable path.

FAQ

Q1: Which engines does this kit fit?

It fits Mercury FourStroke outboards between 4 horsepower and 60 horsepower, with serial numbers 0R411838 and above.

Q2: What makes this kit better than aftermarket versions?

OEM-grade materials, tighter tolerances, and a complete set of components designed exactly for your pump housing.

Q3: How can I confirm this is the right kit for my outboard?

Match your engine’s serial number and horsepower range with the specifications listed here or in your owner’s manual.

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

Absolutely. It’s built for either environment and resists corrosion and wear.

Q5: Is installation simple?

Yes—most boat owners can install it using basic tools, especially if they’ve serviced a water pump before.