For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Camshaft | 0.519
Camshaft Timing Chain | 0.724
Camshaft Sprocket | 0.728
Connecting Rod | 0.603
Connecting Rod Bearing Kit | 0.616
Coolant Radiator | 1.219
Crankshaft | 0.646
Crankshaft Sprocket | 0.736
Crankshaft Balancer | 0.659
Crankshaft Bearing Kit | 0.096
Crankshaft Transmission Pilot Bearing | 0.649
Crankshaft Front Oil Seal | 0.213
Crankshaft Rear Oil Seal | 0.137
Cylinder Head | 0.269
Cylinder Head Gasket | 0.289
Cylinder Head Cover | 0.386
Cylinder Head Cover Gasket | 0.423
Cylinder Block | 0.033
Drive Belt Tensioner (Generator) | 1.066
Drive Belt Tensioner (Cooling Fan) | 1.062
Engine Cooling Thermostat | 1.246
Engine Front Cover | 0.206
Engine Front Cover Gasket | 0.207
Engine Flywheel (Automatic Transmission) | 0.666
Engine Flywheel (Manual Transmission) | 0.666
Exhaust Manifold | 3.601
Exhaust Manifold Gasket | 3.270
Engine Mount | 0.027
Engine Mount Bracket | 0.029
Ignition Coil | 2.170
Intake Manifold | 3.265
Intake Manifold Gasket | 3.270
Intake Manifold Support | 3.336
Generator | 2.275
Oil Filter | 1.836
Oil Level Indicator | 1.516
Oil Pan | 1.426
Oil Pan Gasket | 1.429
Oil Pump | 1.652
Oil Pump Screen | 1.656
Oil Relief Valve | 0.253
Piston Set | 0.629
Piston Ring Set | 0.643
Radiator Fan Shroud | 1.277
Spark Plug | 2.270
Starter Motor | 2.041
Throttle Body | 3.335
Throttle Body Gasket | 3.336
Timing Chain (Camshaft) | 0.724
Timing Chain (Crankshaft) | 0.724
Timing Chain Tensioner | 0.724
Timing Chain Guide | 0.724
Intake Valve | 0.296
Exhaust Valve | 0.297
Valve Lifter | 0.459
Valve Guide | 0.283
Valve Spring | 0.303
Valve Spring Seat | 0.309
Valve Stem Oil Seal | 0.308
Valve Keeper | 0.310
Water Pump Gasket | 1.079
Water Pump | 1.069