Engine Coolant Thermostat Replacement RPO LX9

1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
2. Remove the thermostat.
3. Remove and discard the thermostat O-ring seal.
4. Clean and inspect the thermostat housing sealing surfaces.

1. Install a NEW thermostat O-ring seal.
2. Install the thermostat.
3. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .