CBM Motorsports Front Cover Alignment Tool for LS Series Engines CBM-10451 Aligns the front cover so that the front main seal is centered Fits all LS Series engines. LS1, LS2, LS3, LS4, LS6, LS7, LS9, L92, L76 This is for the front cover only Billet aluminum with tight tolerances Made in house by CBM Motorsports