Comp Cams Billet Belt Tensioner for GM LS1, LS2, LS3, LS6 and LS7 54021
The GM LS engines with the factory spring loaded belt tensioners become prone to throwing belts when used in performance applications and with aftermarket balancers. These bolt-on Billet LS Belt Tensioners are a fully adjustable solution for controlling potentially damaging resonance and maintaining desired belt tension