971402 Thrust washer, mainshaft bearing

This mainshaft bearing thrust washer is a critical component for maintaining proper spacing and reducing friction within the transmission of vintage 45 cubic inch Flathead models. Designed as a direct replacement for OEM parts 35110-33 and 2291-33, it ensures the mainshaft assembly remains stable under load. It fits 1935 to 1973 45" Flathead models. When you are rebuilding an old gearbox, these small washers are often overlooked but essential for preventing excessive end play. This MCS part provides the precise tolerances required for smooth operation. Whether you are restoring a classic WLA or keeping a Servi-Car on the road, this washer is a reliable choice for your drivetrain overhaul.