Remove the lower unit from the upper gearcase following your MerCruiser service manual procedures
Install New Gaskets: Place the new thermostat gasket and housing cover gasket in position
Durable Construction: Built with a heavy-wall steel canister and an epoxy coating to resist corrosion in harsh marine environments
Safety First: Ensure the engine is off and the boat is securely positioned on a trailer or lift
Engineered to reduce bow rise
Water Distribution Housing – Fits Mercury MerCruiser 4.3L 5.0L 5.7L 6.2L Engines (Replaces 863631T1, 863444T1) family-yamaha-f25lehb Remove the lower unit fromWater Distribution Housing Fits Mercury MerCruiser 4. 3L 5. 0L 5. 7L 6. 2L Engines (Replaces 863631T1, 863444T1) This water distribution housing is a direct replacement for various Mercury MerCruiser V6 and V8 engines, including 4. 3L, 5. 0L, 5. 7L, and 6. 2L models from 1998 and newer. It is compatible with MAG and MPI variants, providing a reliable solution for your marine engine's cooling system. It directly replaces Mercury MerCruiser OEM part