Billet lower crankshaft gear for all 4.6L 4V & FGT / GT500 utilizing 10mm timing. The factory powdered metal crankshaft gear remains to be weak link in Ford Modular engines and the failure of this gear could result in severe damage to the engine.
L&M Engines has decided to make their own billet sprockets to alleviate lead times and have more control over any build delays!
