Cooling System

CHEVROLET THERMOSTAT HOUSING 1 PIECE NLA.-USE 531067S THERMOSTAT HOUSING 2EA 605034 1/2" PIPE PLUGS AND 551004 GASKET. (Remove hoses going to elbow fittings in intake. Install 1/2" pipe plugs in place of those fittings)

Indmar Marine Lower Thermostat Housing – Low Profile E-Coat | Part #531069E Seal and protect your cooling system with this genuine Indmar lower thermostat housing, featuring a durable E-coat (electrocoat) finish designed to resist corrosion in the harsh marine environment. The low profile design ensures a clean, precise fit in tight engine bay spaces — common in modern wake boats where engine compartments are compact. Compatible with: Indmar marine engines fitted to Malibu, Moomba, Supra, and Tige boats.

Indmar Marine Raw Water Pump – Full Barb | Part #685001 Keep your cooling system flowing with this genuine Indmar raw water pump, full barb configuration. The raw water pump is the heart of your Indmar engine's cooling system — responsible for drawing water from outside the boat and circulating it through the heat exchanger or raw water cooling circuit to keep your engine at the correct operating temperature. Without a functioning raw water pump your engine will overheat rapidly and catastrophically. Compatible with: Indmar marine engines with raw water cooling systems

Indmar Marine Impeller Pump Gasket – Johnson | Part #685008 Never reuse an old gasket — this genuine Indmar Johnson pump gasket is the correct OEM replacement seal for the Johnson raw water pump fitted to Indmar marine engines. A small but critical component that ensures a leak-free seal on your raw water pump — protecting your cooling system integrity and keeping your engine at safe operating temperature all season long. Compatible with: Indmar marine engines fitted with Johnson raw water pumps on Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year before ordering.

Indmar Marine Raw Water Pump Impeller | Part #685007 The single most important annual service part for your Indmar engine — this genuine Indmar raw water pump impeller should be replaced every season without exception. A healthy impeller means a healthy cooling system. A failed impeller means no cooling water flow and a catastrophically overheated engine in minutes. This small rubber component is without question the cheapest insurance policy you can buy for your Indmar marine engine. Compatible with: Indmar marine engines with Johnson raw water pumps fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year before ordering.