For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Blade, Cooling Fan | 1.055
Cap, Radiator | 1.203
Cord, Coolant Heater | 1.152
Deflector, Radiator Air Lower | 1.272
Drain Cock | 1.219
Heater, Coolant | 1.152
Hose, Radiator Inlet | 1.159
Hose, Radiator Outlet | 1.173
Hose, Thermostat Bypass | 1.097
Hose, Throttle Body Heater | 3.337
Motor, Cooling Fan | 1.055
Outlet, Water | 1.153
Pipe, Heater Inlet | 8.846
Pipe, Thermostat Bypass | 1.097
Pump, Water | 1.069
Radiator, Coolant | 1.219
Relay, Cooling Fan | 1.055
Reservoir, Coolant Recovery | 1.240
Sensor, Engine Coolant Temperature | 3.682
Thermostat, Engine Coolant | 1.246