1988-1989 Dodge D100 3.9L V6 GAS. 1975-1979, 1984-1987 Dodge D100 3.7L 6 Cyl GAS. Notes: OE Type Thermostat -- 195 Degree; OE Temperature. OEM fit, function and design for precise engine cooling. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.