90001-ZV5-821 Screw-Washer - Overview. The 90001-ZV5-821 Screw-Washer is a specialized OEM fastener designed for Honda marine engine systems, providing an integral washer for consistent clamping force. This part plays a crucial role in securing components firmly within the marine engine setup, ensuring reliable and optimal operation.. Key Features. Precision-engineered screw-washer designed to match original factory specifications, dimensions, and tolerances.. Manufactured as a genuine OEM component to guarantee quality and durability.. Integral washer design ensures consistent clamping force, critical for maintaining component reliability.. Smooth integration with existing parts, seals, and housings promotes seamless assembly.. Ensures mechanical stability and safety in marine engine assemblies.. Maintains expected durability and performance throughout operation.. Why Choose Genuine OEM. Using original Honda parts like the 90001-ZV5-821 Screw-Washer preserves the integrity of your mar