- Braking System
- Engine
- Gaskets
- Cylinder Head/Attachment Parts
- Air Supply
- Intake Manifold
- Charging (supercharged/turbocharged)
- Crankcase
- Crankshaft Drive
- Lubrication
- Oil Cooler/Attachment Parts
- Oil Sump/Attachment Parts
- Oil
- Fuel Supply System
- Pump/Accessories
- Fuel Mixture Formation
- Mixture Formation
- Exhaust System
- Cooling System
- Water Pump/Gasket
- Radiator/Oil Cooler
- Antifreeze
- Clutch/Attachment Parts
- Electrics
- Spark/Glow Ignition