GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers

Application

GM SPO Group Number

Camshaft

0.519

Camshaft Bearing

0.539

Camshaft Timing Chain

0.724

Connecting Rod

0.603

Connecting Rod Bearing Kit

0.616

Coolant Radiator

1.219

Crankshaft

0.646

Crankshaft Balancer

0.659

Crankshaft Bearing Kit

0.096

Crankshaft Transmission Pilot Bearing

0.649

Crankshaft Oil Deflector

1.430

Crankshaft Front Oil Seal

0.213

Crankshaft Rear Oil Seal

0.137

Cylinder Head

0.269

Cylinder Head Gasket

0.289

Engine Block

N.S.

Engine Cooling Thermostat

1.246

Engine Coolant Air Bleed Pipe

0.1097

Engine Coolant Air Bleed Pipe Gasket

0.1097

Engine Front Cover

0.206

Engine Front Cover Gasket

0.207

Engine Flywheel (Automatic Transmission)

0.666

Engine Flywheel (Manual Transmission)

0.666

Engine Rear Cover

0.137

Engine Rear Cover Gasket

0.137

Exhaust Manifold

3.601

Exhaust Manifold Gasket

3.27

Ignition Coil

2.17

Intake Manifold

3.265

Intake Manifold Gasket

3.270

Oil Filter

1.836

Oil Level Indicator

1.516

Oil Level Indicator Tube

1.516

Oil Pan

1.426

Oil Pan Gasket

1.429

Oil Pump

1.652

Oil Pump Screen

1.656

Oil Pan Cover

1.426

Oil Pan Cover Gasket

1.429

Piston with Pin

0.629

Piston with Ring Kit

0.643

Radiator Fan Shroud

1.277

Spark Plug

2.270

Starter Motor

2.041

Throttle Body

3.335

Throttle Body Gasket

3.336

Valley Cover

3.265

Valley Cover Gasket

3.270

Valve Lifter

0.459

Valve Lifter Guide

0.439

Valve Pushrod

0.426

Valve Rocker Arm

0.333

Valve Rocker Arm Cover

0.386

Valve Rocker Arm Cover Gasket

0.423

Valve Rocker Arm Pivot Support

0.429

Valve Spring

0.303

Valve Spring Shim

0.303

Valve Stem Oil Seal

0.308

Water Pump Gasket

1.079

Water Pump with Gasket

1.069