Forged Housing for Durability Undergoes extreme impact, wear and fatigue testing to ensure quality and durability Coated for corrosion resistance Stud Type: Threaded Manufactured in ISO 9001 Certified Facilities Forged, machined shell provides strength Product Description Advantage Ball Joints are cost-effective replacement components for your GM and non-GM vehicle. These ball joints connect your vehicle??s control arm to its steering knuckle and feature a polyurethane boot and one-piece housing. These reliable aftermarket suspension ball joints offer quality and performance, all at an economical price.