Indmar Marine Thermostat 160° Drilled – LT1 & 5.7L Fresh Water Cooled Engines | Part #986034 Maintain optimal engine temperature with this genuine Indmar 160° drilled thermostat, designed specifically for fresh water cooled Indmar marine engines. The precision drilled bypass hole ensures smooth coolant flow and prevents air pockets from forming in the cooling system — a common cause of overheating in tow boats. Compatible with: Indmar LT1 and 5.7L fresh water cooled engines fitted to Malibu, Axis, Moomba, Supra, and Tige boats.
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.