This Raybestos control arm and ball joint assembly (part number 507-1388) is designed for use on the lower, front end of Audi A6 and S6 vehicles. Made from high-quality steel and featuring a bolt-on mounting style, this control arm comes with a bushing included and does not require a cotter pin hole. The assembly is a standard duty part with 100% accuracy of fit, ensuring that it will function properly and provide reliable performance. This control arm is manufactured in Taiwan and weighs 4.5 lbs. With compatibility with a range of Audi part numbers, including PSA63820 and 4F0407151, this control arm is a quality replacement part for your Audi.