518002 Sprocket shaft crankcase bushing. +.005"

For 1939 to 1973 45-inch Flathead engines that require more significant crankcase repair, this .005-inch oversized sprocket shaft bushing is the ideal choice. Serving as the left-side crankcase bearing race, this component helps restore the proper fit and function of the sprocket shaft in cases where the bore has been enlarged. The standard outer diameter is 1.753 inches, and this oversized version ensures a secure press fit. This MCS part corresponds to OEM part numbers 24612-39 and 518002. Using high-quality bushings like this is essential for a reliable bottom-end rebuild on these classic 750cc powerplants.