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Auto Repair Dictionary

Common auto repair terms explained in plain language

20 terms

A

ABS

Anti-lock braking technology that helps prevent wheel lockup during hard braking.

A

Air Conditioning Compressor

A major A/C system component that compresses refrigerant so cool air can be produced.

A

Air Conditioning Condenser

A heat exchanger that helps remove heat from refrigerant in the air conditioning system.

A

Air Filter

A replaceable filter that helps keep dirt and debris out of the engine intake system.

A

Alternator

A charging-system component that helps power electrical systems and recharge the battery.

B

Battery

A vehicle power source that helps start the engine and support electrical systems.

B

Brake Caliper

A hydraulic brake component that squeezes brake pads against the rotor.

B

Brake Pads

Wearable friction material that helps slow your vehicle when braking.

C

Catalytic Converter

An emissions component that helps convert harmful exhaust gases into less harmful output.

C

Coolant

Fluid that helps regulate engine temperature and protect the cooling system.

E

Engine Diagnostic

A diagnostic process used to identify check-engine lights and performance issues.

O

Oil Filter

A filter that removes contaminants from engine oil during operation.

R

Radiator

A cooling-system component that helps remove heat from engine coolant.

S

Serpentine Belt

A long engine belt that drives multiple accessories such as the alternator and A/C compressor.

S

Spark Plug

An ignition component that creates the spark needed for combustion in gas engines.

S

Starter

An electric motor that helps crank the engine when starting the vehicle.

S

Struts

Suspension components that help support the vehicle and control ride movement.

T

Tire Rotation

Moving tires between positions to help promote even wear and longer tire life.

T

Transmission Fluid

Fluid that lubricates and supports operation inside an automatic or manual transmission.

W

Wheel Alignment

Adjustment of wheel angles to help improve tire wear, steering, and handling.