Water Pump Repair Kit – Mercury/Mariner 175-300 hp (4-Stroke) – Part No. 8M0205803 (Formerly 8M0142980)
Keep your outboard running cool and reliable with this complete OEM water pump repair kit from Mercury/Quicksilver. Engineered specifically for 4-stroke Mercury and Mariner outboards rated 175-300 hp (3.4 L V6 and 4.6 L V8, and 450R models, serial number 2B529482 & above), this kit includes every component you need to properly rebuild the water pump: face plate, impeller, impeller key, multiple gaskets, face-seal tool, drain-plug seal, O-rings and more.
Why choose this kit? Because maintaining proper cooling is essential to prevent overheating, power loss and engine wear in marine applications. With this genuine Mercury-Marine kit you’re getting the exact fit, materials and durability the engine was designed for - not a generic substitute.
Install our kit during your next lower-unit service or when you detect symptoms such as reduced cooling flow, rising temperatures or old age/low hours.
Ensure proper fitment by checking your engine’s model, horsepower and serial number (should be 2B529482 or higher). Upgrade your cooling system now and get back to smooth, dependable boating.