Forged shell for durability Undergoes extreme impact, wear and fatigue testing to ensure quality and durability Coated for corrosion resistance 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 vehicles 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.