Engine Coolant Thermostat. To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in theCompatibility Table. The engine types ma y include 4.0L 3969CC V8 GAS DOHC Naturally Aspirated,4.3L 4293CC V8 GAS DOHC Naturally Aspirated,4.5L 4477CC l6 GAS DOHC Naturall y Aspirated,4.7L 4663CC 285Cu.