Engine Water Pump. To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in theCompatibility Table. The engine types may include 3.5L 3498CC V6 GAS DOHC Naturally Aspirated,4.0L 3954CC V6 FLEX DOHC Natu rally Aspirated,4.0L 3954CC V6 GAS DOHC Naturally Aspirated.