Indmar GM 5.7 1995 – 2018

Indmar Marine J-Formed Hose with Spring | Part #845040 Ensure reliable coolant flow with this genuine Indmar J-formed hose complete with internal spring. The integrated spring prevents the hose from collapsing under suction — a common problem on marine engines where cooling system pressure and flow rates are critical to preventing overheating on the water. Compatible with: Indmar marine engines fitted to Malibu, Moomba, Supra, and Tige boats.

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 Exhaust Gasket – Catalyst Special | Part #556202SPEC Don't overlook this critical sealing component — this genuine Indmar special catalyst exhaust gasket is the correct OEM replacement for Indmar catalyst exhaust systems. Engineered to handle the extreme heat and pressure of the marine exhaust environment, this special specification gasket ensures a perfect seal every time — protecting your engine, your passengers, and your investment. Compatible with: Indmar marine engines with catalyst exhaust systems fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year before ordering.

Indmar Marine Ignition Wire / Spark Plug Leads Set – 5.7L Chevrolet Small Block EST | Part #756002 Restore reliable ignition performance with this genuine Indmar ignition wire and lead set, specifically designed for the Indmar 5.7L Chevrolet small block engine with Electronic Spark Timing (EST). A complete set of ignition leads is one of the most overlooked tune-up items on marine engines — yet worn or damaged leads are one of the most common causes of misfires, rough running, and hard starting on the 5.7L small block. Compatible with: Indmar 5.7L Chevrolet small block marine engines with Electronic Spark Timing (EST) fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year

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 Ignition Wire / Spark Plug Leads Set – Black Small Block HVS | Part #751106 Restore crisp reliable ignition performance with this genuine Indmar black ignition wire set for the small block marine engine with High Voltage Switch (HVS) ignition system. A complete wire set is one of the most impactful ignition upgrades you can make — delivering clean high voltage pulses from the HVS distributor to every spark plug for consistent firing across all cylinders all season long. Compatible with: Indmar small block marine engines with High Voltage Switch (HVS) ignition systems fitted. Contact us to verify fitment for your specific model year before ordering.