Upper Lower Ball Joint Kit K500167 K80621 for Hyundai Sonata 1999-2005, XG300 2001, XG350 2002-2005, Ball Joints Front Upper Lower for Kia Amanti 2004-2006, Magentis 2001-2006, Optima 2001-2006. K80621 OEM / Interchange Numbers: 5176038000, 517603F000, 5176138A00.