Car Parts Encyclopedia
Get expert knowledge about your vehicle's components, including symptoms of failing parts and repair advice
Your car has hundreds of components, from the headlights to the tailpipe. Click on a system to learn more about its functions and parts, and what to do if they start to go bad.
Engine
Engine
By converting fuel into motion, the engine powers your vehicle. The key parts in an engine are spark plugs, valves, pistons, connecting rods, and the crankshaft.
A - F
N - Z
Brakes
Brakes
Modern automotive brake systems combine leverage and multiplied hydraulic force to stop your vehicle. Learn more about your car's brake parts and systems.
A - F
G - M
Drivetrain
Drivetrain
The drivetrain is a system of components — the engine, transmission, driveshafts, geared differentials, and drive axles — working together to generate power and deliver it to the wheels.
Electrical and Lights
Electrical and Lights
When you switch on the ignition, turn on the radio, or operate the wipers, your vehicle's electrical system provides the power. It is composed of the charging, starting, computer, ignition, and lighting systems.
Exhaust and Emissions
Exhaust and Emissions
The exhaust and emissions systems reduce the amount of harmful gases produced by the engine and then safely route the remaining exhaust out of the vehicle.
A - F
Heating and Air Conditioning
Heating and Air Conditioning
Using thermodynamics and computer technology, the heating, ventilation, and air
conditioning (HVAC) system helps keep the cabin temperature comfortable for occupants.
Suspension and Steering
Suspension and Steering
The steering system helps you control the vehicle while the suspension system absorbs vibration and shock as the vehicle moves over rough and uneven road surfaces.
N - Z