WASHER - RETAINER (Mitsubishi MB1K8828)

A damaged retainer washer can lead to loosening of fastened components over time. This aftermarket replacement part references Mitsubishi as the OE maker and cross-references part number MB1K8828. The washer functions as a retainer, providing a bearing surface and preventing fastener pull-through. Its plain mechanical role is to distribute clamping load evenly under a bolt head or nut. A concrete generic failure consequence is that a worn or missing retainer washer may allow vibration to loosen the assembly. Keeping a retainer washer in sound condition helps maintain consistent joint tension in secured connections. Verify the serial number or application, then call (562) 693-7748.

Part number variants: MB1K8828, mb1k8828