Gasket, Thermostat 4.3/5.7/7.4 4.3L / 5.7L / 7.4L Thermostat to Engine Gasket , Fits Crusader MP5.0/5.7L freshwater cooled marine engines from 2004, Crusader MP8.1L water distribution housing to water crossover assembly. Gasket does not have grounding rivet, Indmar 55-1004, Indmar 2007 and up with 2 bolt housing.