This is a 78°C thermostat that may be fitted to cars where it is desirable to lower engine temperature. This may be particularly beneficial in countries where the ethanol content in the fuel is 10% or greater and/or there is a hot climate.

Cars built from 1987 onward, or those cars fitted with catalytic convertors (where the convertor must reach a certain temperature for the catalytic function of the convertor to be effective), should be fitted with the 88°C thermostat available UE36600 


  • Rolls-Royce: Silver Shadow, Silver Shadow II, Silver Wraith II, Corniche (to model year 1986), Silver Spirit (to chassis 16970) & Silver Spur (to chassis 16970)
  • Bentley T, T2, Continental (to model year 1986), Mulsanne (to chassis 16970), Eight (to chassis 16954), Mulsanne Turbo (to chassis 14162) & Turbo R (to chassis 16570)