Pinion Washer

The Pinion Washer by Diversified Machine is an essential fastening component for differential and drivetrain assemblies in both street and performance vehicles. This precision-engineered washer distributes load across the pinion gear assembly, preventing uneven bearing wear and maintaining critical gear mesh geometry under acceleration and deceleration cycles. Whether you're rebuilding a factory differential, upgrading to a performance unit, or restoring a classic car, the pinion washer ensures proper alignment and longevity of your drivetrain components.

Manufactured by Diversified Machine, this washer is precision-sized to specification RRC-1368, featuring compact dimensions of 2 x 0.95 inches in diameter with a nominal thickness of 0.1 inches. The lightweight design—just 0.05 lbs—minimizes rotational mass while maintaining rigidity under high torque loads. Proper washer selection is critical because inadequate load distribution can result in premature bearing failure, gear tooth scoring, and catastrophic differential damage. This washer maintains proper preload tension on the pinion bearing, which directly affects gear backlash and noise levels in the final drive.

This pinion washer is ideal for mechanics and enthusiasts performing differential service, gear ratio changes, or complete drivetrain rebuilds. Compatibility depends on your specific differential type and pinion shaft configuration, so verify the RRC-1368 specification against your vehicle's assembly documentation or consult with a differential specialist before installation. Proper installation requires torque-to-spec fastening and careful attention to preload adjustments—this component works in concert with shims, bearings, and crush sleeves to achieve optimal drivetrain performance and reliability.