90401-ZW5-000 Washer (10.5X44) - Overview. The 90401-ZW5-000 Washer (10.5X44) is a precision-engineered component integral to Honda marine engine systems. This washer plays a crucial role in mechanical assemblies, providing secure and stable mounting while ensuring the integrity and performance of the connected parts. With dimensions of 10.5mm inner diameter and 44mm outer diameter, it is designed to meet exact factory specifications, guaranteeing seamless integration with existing parts, mainta