MasterCraft Ilmor Thermostat 6.0L, 6.2L170* Ilmor Thermostat for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for 6.0L and 6.2L Ilmor engines. (Also fits the 5.7L OPS, 6.0L OPS, 6.2L OPS)*Requires Ilmor Thermostat Housing Gasket*