1975-1976 Triumph TR6 2.5L 6 Cyl. Notes: Engine Coolant Thermostat -- Replaces TH1378.83J; With Leak Groove; Opening Temp: 83 C / 181 F. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.