Comb - Conn
- Combination pliers
- Combustion
- Combustion chamber (combustion space)
- Combustion cycle
- Combustion cycle diagram
- Combustion efficiency
- Combustor
- Comet head
- Commercial vehicle
- Comopression ignition cycle
- Comopressometer
- Compensating axle suspension
- Compensating jet
- Compensator
- Competition car
- Complete overhual
- Completely knocked down
- Component
- Compound carburetter
