The stock cast aluminum timing belt tensioner brackets break from fatigue.We have found that power output, the type/brand of crank damper, or brand of timing belt do not affect when the stock timing belt tensioner bracket will fail. When the stock unit fails, the timing belt will jump and engine damage may occur. You will also be left stranded on the side of the road. These billet chromoly units are a direct replacement for the stock unit and will not break. This upgrade is a great idea to do while replacing your timing belt and upgrading to our SFI approved Crank Damper.