What are the large, side body sections that extend from the side doors back to the rear bumper in a vehicle?

The large side body sections that extend from the side doors back to the rear bumper of a vehicle are known as quarter panels. These panels play a crucial role in the overall structure and integrity of the vehicle's body, contributing both to its aesthetic appeal and its durability. Located at the rear of the vehicle, the quarter panels serve as the transition between the side of the car and the rear, framing the back portion of the body and housing structural components, as well as mounting points for the rear lights and other fixtures.

In addition to being important for structural purposes, quarter panels also provide a protective covering for the internal chassis components from external elements, such as debris and water. They often require repair or replacement after minor accidents or collisions, making knowledge of their function and placement essential for any auto body technician. Understanding the specific parts of a vehicle's body, like quarter panels, is vital for effective repair and restoration processes.