REPAIR KIT-W/P 3&4 CYL OB MZ

A reliable water pump is the backbone of your Mercury outboard’s cooling system. If your engine isn’t circulating water efficiently, it’s only a matter of time before overheating becomes a real problem. The Mercury Complete Outboard Water Pump Kit (46-8M0113799) delivers everything needed to restore proper cooling function and keep your motor running at peak performance.

This all-in-one kit is built to OEM specifications, ensuring a precise fit and dependable durability. It includes a high-quality impeller, upper and lower pump housings, drive key, gaskets, seals, and a faceplate, giving you a full replacement solution rather than just swapping out individual parts. Whether you’re performing routine maintenance or troubleshooting a cooling issue, this kit gets the job done right.

Why This Kit is Essential:

• Restores Cooling Efficiency – Ensures proper water flow to prevent overheating and engine wear.
• OEM Precision Fit – Designed specifically for Mercury outboards ranging from 40 to 125 HP.
• Comprehensive Replacement – Includes all key components for a complete water pump rebuild.
• Long-Term Reliability – Built from marine-grade materials to withstand extreme conditions.

A failing water pump can sideline your boat and lead to costly engine repairs. Replacing worn components with this genuine Mercury water pump kit ensures your outboard stays cool, efficient, and ready for the next trip.