Hardened timing belt backing washer designed specifically for Nissan RB26DETT engine. Addresses the common issue of the OEM washer crushing, which can result in loss of crank bolt pre‑tension, timing belt damage, crankshaft keyway wear, and potential engine failure—especially when using upgraded crank bolts.

RB26‑Specific Design

• Features a chamfer on the rear of the internal diameter to clear the enlarged crank snout radius unique to RB26 engines

Key Features

• OE Reference: Nissan 13022-05U10
• Replacement washer is 4x harder and stronger than OE.
• Square key notch removed to reduce potential stress raisers.
• Same thickness as OEM (does not change crank pulley offset).
• Laser-etched directional marking for correct installation orientation.

Installation Location: Fits on the nose of the crankshaft between the timing belt sprocket and the oil pump.