Replacement for JIMS pinion shafts MCS 509909 37-73 45″ Flathead (Repl. 24005-37), MCS 510534 54-57 B.T. (Repl. 24006-54A) and MCS 510585 58-72 B.T. (Repl. 24006-58). Note: These ‘no hole’ plugs can only be used with side oilers. 73-up models need a hole to provide lubrication to the connecting rods.
