The component that the top of the inner fender bonds to is called the strut tower, also known as the shock tower. It's a crucial structural part of the car's chassis that provides support for the suspension system.
Inner fender bonds: These are sheet metal panels that line the inside of the wheel arches. They protect the engine compartment and other components from water, dirt, and debris.
Strut tower: This is a reinforced section of the chassis located at the top of the wheel arch. It houses the upper mount of the strut, a key component of the suspension system that connects the wheel to the chassis and allows it to move up and down.
Therefore, the top of the inner fender bonds is typically welded or bolted to the strut tower to provide additional strength and support for the suspension system.