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Indmar Marine Thermostat Kit – 5.7L | Part #491010 Service your 5.7L cooling system with confidence using this genuine Indmar thermostat kit — a complete kit containing everything needed for a full thermostat replacement in one part number. No hunting for individual gaskets or hardware — everything included, ready to fit. Compatible with: Indmar 5.7L marine engines fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment

Indmar Marine Thermostat Housing Gasket | Part #531058 Ensure a leak-free thermostat housing seal with this genuine Indmar thermostat housing gasket. A small but critical component — always replace this gasket any time the thermostat housing is removed. Never reuse an old gasket on reassembly.