90506-ZZ5-C00 Washer - Overview. The 90506-ZZ5-C00 Washer is a crucial component in Honda marine engine systems, specifically designed as a propeller thrust washer. It plays a vital role in maintaining the reliable operation of the propeller system by providing a bearing surface that evenly distributes load and pressure when used with a bolt or fastener, ensuring smooth mechanical motion and alignment.. Key Features. Precisely engineered OEM washer that matches factory specifications, dimensions