90502-ZVP-000 Wave (45mm) Washer - Overview. The 90502-ZVP-000 Wave (45mm) Washer is a genuine Honda OEM component specifically designed for Honda marine engine systems. This washer functions as a wave spring washer, providing essential tension to secure components firmly in place within the engine's mechanical assemblies. By ensuring consistent pressure, it plays a vital role in maintaining the reliability and durability of your marine engine equipment, facilitating smooth operation and prevent