- Braking System
- Axle Mounting/ Steering/ Wheels
- Wheel Hub/Mounting
- Engine
- Air Supply
- Charging (supercharged/turbocharged)
- Air Supply
- Exhaust System
- Clutch/Attachment Parts
- Wheel Drive
- Electrics
- Spark/Glow Ignition
- Heating/Ventilation
- Air Conditioning
- Window Cleaning