Description
Mercury 863444T1 Water Distributor Housing
Mercury 863444T1 is a genuine Mercury water distributor housing for compatible Mercury and MerCruiser cooling system assemblies where this exact part number is specified by the factory parts diagram.
Key Features
- Genuine Mercury replacement water distributor housing
- Used in compatible marine engine cooling system assemblies
- Routes cooling water through the correct hose and passage connections
- Direct replacement when Mercury part number 863444T1 is specified
- Designed for exact part-number matching during cooling system service
Fitment / Product Details
- Brand: Mercury
- Part Number: 863444T1
- Product: Water Distributor Housing
- System: Cooling / Water Distribution
Water distributor housing fitment depends on engine model, serial number, cooling system layout, hose routing, and the exact assembly being serviced. Verify fitment with your Mercury or MerCruiser serial number and factory parts diagram before ordering.
What’s Included
- Mercury 863444T1 water distributor housing
Hoses, clamps, thermostats, temperature sensors, gaskets, seals, mounting hardware, and related cooling system parts are not included unless listed separately.
Why You Should Buy
The water distributor housing is part of the cooling system routing. A damaged or incorrect housing can cause leaks, poor hose fitment, or cooling flow problems. Use the correct Mercury housing for the exact engine and parts diagram being serviced.
Common Applications
Used on compatible Mercury and MerCruiser cooling system assemblies where the factory parts listing calls for water distributor housing 863444T1.
FAQ
Does this fit every Mercury or MerCruiser engine?
No. Fitment varies by engine model, serial number, and cooling system configuration. Verify by parts diagram before ordering.
Does this include hoses or clamps?
No. This listing is for the water distributor housing only unless other parts are specifically listed.
Can Wakeboss help confirm fitment?
Yes. Send your engine model and serial number through Ask a Parts Pro and we can help check the correct cooling system diagram.

