863444T1 863444A1 Manual Water Distribution Housing Mercruiser 4.3 5.0 5.7 6.2 L

Manual Water Distribution Housing for Mercruiser

This manual water distribution housing for Mercruiser routes coolant flow on 4.3L, 5.0L, 5.7L, and 6.2L engines, and it cross-references OEM part numbers 863444T1 and 863444A1.

Overview

This Manual Water Distribution Housing for Mercruiser directs engine coolant through V6 and V8 marine powerplants. Built for Mercruiser 4.3L, 5.0L, 5.7L, and 6.2L models, this housing replaces OEM part numbers 863444T1 and 863444A1. The Manual Water Distribution Housing keeps cooling water flowing evenly to protect the engine during marine operation.

Built For Performance

• Cast construction for tough marine cooling systems
• Direct replacement for Mercruiser OEM part numbers 863444T1 and 863444A1
• Matches coolant passages for 4.3L, 5.0L, 5.7L, and 6.2L engines
• Helps maintain steady water distribution through the cooling system
• Engineered for Mercruiser inboard and sterndrive applications

Fits These Machines

• for Mercruiser 4.3L
• for Mercruiser 5.0L
• for Mercruiser 5.7L
• for Mercruiser 6.2L

On-The-Job Use

• Replacing a worn water distribution housing during marine cooling service
• Restoring coolant flow when servicing sterndrive engines for Mercruiser installations
• Supporting routine cooling system maintenance on freshwater or saltwater boats

Specs At A Glance

Good To Know

Q: Is this water distribution housing for Mercruiser a direct replacement? A: It is designed as a replacement for Mercruiser OEM part numbers 863444T1 and 863444A1, but verify your engine serial number and gasket kit before installation.

Q: What does this housing do in the cooling system? A: It routes and distributes water through the engine and exhaust components. This helps maintain proper operating temperatures during marine use.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.