This replacement bushing kit is designed for the BDS upper control arms for the 2007-2026 Chevy Silverado 1500 & GMC Sierra 1500 or 2001-2010 Chevy Silverado & GMC Sierra 2500/3500 HD. At the frame mounted end you'll find a pair of durometer-specific vulcanized rubber bushing preinstalled providing smooth, quiet and reliable operation bolting in directly into the factory mounts. Kit includes 2 bushing assemblies for quick and easy installation on 1 control arm. Fits lift kits with component boxes 021702, 021703, 021704, 021705, 011350, 021664, 021665, 121255, 121260, 121261.