For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Connecting Rod | 0.603
Connecting Rod Bearing Kit | 0.616
Crankshaft | 0.646
Crankshaft Balancer Kit | 0.659
Cylinder Head | 0.269
Cylinder Head Gasket Kit | 0.289
Drive Belt Tensioner | 1.060
Engine Cooling Thermostat | 1.246
Engine Front Cover | 0.206
Engine Front Cover Gasket | 0.207
Exhaust Camshaft | 0.519
Exhaust Manifold | 3.601
Exhaust Manifold Gasket | 3.270
Flywheel Housing Cover | 0.679
Flywheel Kit | 0.666
Intake Camshaft | 0.519
Intake Manifold | 3.265
Intake Manifold Gasket | 3.270
Oil Level Indicator | 1.516
Oil Pan | 1.426
Piston with Pin | 0.629
Power Steering Pump Kit | 6.605
Power Steering Pump Gasket | 6.606
Spark Plug | 2.270
Throttle Body | 3.335
Throttle Body Gasket | 3.336
Water Pump | 1.069
Water Pump Cover | 1.073