90544-ZV5-020 Special Washer - Overview. The 90544-ZV5-020 Special Washer is a crucial component within Honda marine engine systems, designed to support rigging and accessory assemblies. This high-quality washer plays an essential role in ensuring proper mechanical function and reliable assembly performance. Precision-engineered for Honda applications, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. A specially designed washe