Billet Belt Tensioner for GM LS1, LS2, LS3, LS6 and LS7 Fits GM LS1, LS2, LS3, LS6 and LS7, replacing factory drive belt tensioner. Fully adjustable solution for controlling resonance and maintaining appropriate serpentine belt tension. Constructed from billet aluminum. 2010+ LS-equipped Camaros require serpentine belt change. Does not fit in truck/SUV applications. Made in U.S.A.