This high-quality Delphi suspension ball joint is designed for the front lower placement on your Hyundai Sonata or Kia Optima. It features a bolt-on mounting style with a 100% accuracy of fit for easy replacement without the need for drilling. The black steel material is sealed and includes a dust boot, bolt kit, and nuts for mounting, but no washers or cotter pin. This suspension ball joint is a standard duty replacement part with a maximum outside diameter of 42.0mm and a weight of 2lb. It is compatible with OE/OEM part numbers 545303S100 and 545302T010, as well as interchange part numbers BJ60365, BJ07078, 1017348, K500231, 101-7348, and MS90520. Upgrade your vehicle's steering and suspension with this reliable Delphi ball joint.