518131 Pinion shaft bushing. std. size

Keeping the oil pressure and alignment correct in a vintage Flathead requires precision in the crankcase. This standard size pinion shaft bushing is a high-quality steel replacement designed specifically for 1940 to 1948 74-inch and 80-inch Flathead models. It installs directly into the crankcase to provide a stable, low-friction surface for the pinion shaft to rotate within. Given the age of these machines, replacing worn bushings is a vital step in any engine overhaul to prevent catastrophic failure and maintain proper oiling. This component replaces OEM 24595-40 and provides the durability needed for these classic side-valve engines to keep running smoothly for years to come.