Description: 100% Brand New Items, Never Used Or Installed Material: Aluminum Surface Finish: Anodized Belt Type: Serpentine 5/8" thick Billet Aluminum Construction, will not flex. All hardware for a quick installation. This LS R4 High Mount A/C Bracket is easy and quick to install, saveing your time and energy. Includes all hardware for a quick installation. Uses standard GM OEM R4 Compressor (Not included). Requires 4 inch clutch, will NOT work with 5". Requires Gates tensioner #38163. Easily found at your local auto parts store. Please compare your item carefully with photo and OE Number to avoid mistake! .