31-4039 Thrust washer, pinion shaft bearing .050"

Setting the correct end-play on a vintage Big Twin bottom end is a precision task that requires the right hardware. This S&S pinion shaft bearing thrust washer is .050 inches thick and is designed to provide the necessary spacing for a reliable rebuild. It is a crucial component for ensuring the pinion gear and bearing assembly are properly aligned within the cam chest. This washer fits 1958 to 1986 Big Twin models, covering the late Panhead and the entire Shovelhead era. By using S&S hardware, you are ensuring that the metallurgy and thickness are consistent, which prevents premature wear and maintains the mechanical integrity of your crankshaft assembly. It is a small but vital part of any professional engine overhaul.