305831 OMC SHIM WASHER .015

OEM OMC Johnson/Evinrude shim washer, part 305831, thickness .015 inches. Used as a precision spacer in cylinder and crankcase assemblies on Johnson outboard motors. This hard-to-find vintage part is typically sold in sets of four and measures approximately 1/2″ outer diameter with 1/4″ inner diameter. Essential for proper engine alignment and clearance in restoration work.