An automobile part is a component of a car that helps it to function properly. FENDER, HOOD, RADIATOR, tonneau, airfilter, and radiatorcap are all examples of automobile parts. A FENDER is a metal or plastic panel that covers the wheel wells of a car. A HOOD is the metal covering that covers the engine of a car. A RADIATOR is a device that helps to cool the engine of a car. A tonneau is a cover that is used to protect the cargo area of a car. An airfilter is a device that helps to filter out dirt and debris from the air entering the engine of a car. Finally, a radiatorcap is a device that helps to regulate the pressure in the RADIATOR of a car.