Milodon's Timing Covers are designed to replace leaky, worn, and outdated O.E. timing covers. Each cover is CNC-machined for maximum quality and is precision checked for proper placement of the seal and dowel pins. These thick, strong covers do not need a weld plate, which stiffens the unit to handle more severe loads and provides a positive cam stop. Please note they will not work with 4-gear style gear drives or belt drives.