Factory coolant thermostat for all 1998-2002 F-Body water pumps EXCEPT pumps with part # 12562459 (check the casting number on the water pump). Includes thermostat housing / radiator hose neck. These OEM thermostats have a temperature rating of 186°F.
1998-2002 Chevrolet Camaro SS
1998-2002 Pontiac Trans-Am
Use with all F-Body water pumps EXCEPT casting # 12562459. If your water pump has casting # 12562459 on it, use thermostat part # 12571261 instead.
Also fits various truck applications; check with your GM dealer for confirmation.