A list of essential car parts, all manufactured components of automobiles. There are hundreds of small parts that come together to form a modern automobile, from hardware and accessories that compliment the car's body and exterior to electronics embedded in the dashboard to the components that make up vital portions of the car's engine and transmission.This list includes names of all important car parts - many of which can be purchased and replaced online - essential for building, maintaining and driving a working automobile. What are the functions of each of these important car parts? You'll find out on this list. They are identified by name and also by the portion of the car in which they are typically found. If you know of any important or key auto parts that aren't included in the list, please include them in the comments section.