This control arm kit is a high-quality replacement for your Lexus GS300, GS430, GS450h, or GS460. It includes six front control arms with ball joints , ensuring 100% accuracy of fit. The mounting style is chassis mount, and the kit comes with bushings and is a direct replacement for your old parts. The manufacturer part numbers are 4862059015, 4863039085, and 4861039125. The kit also includes K621467, K621466, K500124, K500123, interchange part numbers. The control arm kit is made of steel, and there is no cotter pin hole. The California Prop 65 Warning applies, and the kit comes with a 1-year manufacturer warranty.