WASHER - WAVY 1.20B 1.54D .13 (Mitsubishi MB0907020)

A damaged wavy washer can cause looseness in bolted assemblies, leading to vibration and premature fastener failure. This aftermarket replacement part references Mitsubishi as the OE maker and cross-references part number MB0907020. The wavy washer functions as a spring-like spacer that maintains tension between mating surfaces. Its wave shape provides a controlled axial load to compensate for thermal expansion or settling. Over time, a worn wavy washer may allow fasteners to back out under cyclic loading. Keeping a wavy washer in sound condition helps preserve clamp force in critical joints. Verify the serial number or application, then call (562) 693-7748.

Part number variants: MB0907020, mb0907020