New, old stock, unused and in original box. ACDelco 46D2181A Suspension Ball Joint ACDelco Advantage Suspension Ball Joints connect your vehicle's control arm to its steering knuckle, allowing your wheels to turn and the suspension to move. They serve as the pivot between the wheels and suspension, as well as a support for your vehicle's weight. These replacement components contain a forged CNC-machined shell, synthetic bearings, and full-ball studs, for high-quality performance and durability. Undergo impact, wear, and fatigue testing to help ensure quality and durability Heat-treated for enhanced quality and endurance Greaseable design where applicable, for easy maintenance and longevity Dust boot is re-installed and permanently attached to reduce contamination, and increase durability and service life Forged, CNC-machined shell leads to high-quality, precision-made performance and additional strength Full-ball type studs are manufactured using a cold-formed process to reduce imperfections and hold the tightest of tolerances