Cooling System

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.

Indmar Marine Coolant Temperature Sensor | Part #556013 Keep your engine management system accurately informed with this genuine Indmar coolant temperature sensor. The sensor monitors engine coolant temperature and feeds real time data to the ECU, which uses it to adjust fuel delivery, ignition timing, and gauge readings. A failing sensor can cause poor running, hard starting, and false temperature readings that leave you guessing about your engine’s true condition.

Indmar Marine J-Hose Tube Kit | Replaces 845040 | Part #495174 Restore reliable coolant flow with this genuine Indmar J-hose tube kit, the current replacement for part 845040. A cracked, swollen, or collapsing hose can restrict cooling flow and lead to overheating on the water, so replacing it before it fails is cheap insurance. Compatible with: Indmar marine engines previously fitted with J-hose 845040 on Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment before ordering. Searching for part 845040? Part 845040 has been superseded. If you have been quoted or have previously ordered 845040, order 495174 instead. Contact us to confirm the exact kit contents for your engine before ordering.

Indmar Marine Thermostat Housing Complete – Low Profile | Part #531067S Replace your thermostat housing with this genuine Indmar complete low profile thermostat housing. The housing holds the thermostat and directs coolant flow through the cooling circuit, so a cracked, corroded or leaking housing can cause coolant loss and overheating. This is also the current replacement housing for the discontinued 531402E.

Indmar Marine Transmission Anode Kit with Drain Plug | Part #495602 Protect your transmission cooler from corrosion with this genuine Indmar transmission anode kit, complete with drain plug. The sacrificial anode corrodes in place of the surrounding metal, so replacing it on schedule helps protect the transmission cooling circuit from galvanic damage.