Indmar Marine Aluminium Thermostat Housing – Full Fresh Water Cooled System | Part #866081
Keep your cooling system sealed and running efficiently with this genuine Indmar aluminium thermostat housing, built specifically for fully fresh water cooled Indmar marine engines. Aluminium construction means it's lightweight, strong, and stands up to the demands of marine use — resisting corrosion better than standard cast iron alternatives.
Compatible with: Indmar marine engines with full fresh water cooling (F/W) systems fitted to Malibu, Moomba, Supra, and Tige boats.
When should you replace your thermostat housing?
Over time thermostat housings can crack, warp, or corrode — especially in boats that have been flushed with raw water or poorly maintained. If you're seeing coolant leaks around the thermostat area, a cracked or pitted housing is often the culprit. Replacing it at the same time as your thermostat and gasket is best practice and saves labour costs down the track.
Pairs perfectly with:
- 986034 – Thermostat 160° Drilled LT1 & 5.7L F/W
- 985006 – Thermostat Housing Gasket
Features:
- Genuine Indmar OEM part
- Durable aluminium construction
- Designed for full fresh water cooled systems
- Direct OEM replacement — no modifications needed
Part Number: 866081
