90507-ZY3-000 Washer, Plain (12mm) - Overview. The 90507-ZY3-000 Washer, Plain (12mm) is a fundamental component designed for Honda marine engine systems. This plain washer supports the rigging and mechanical assembly by providing a reliable load distribution surface, preventing damage to hardware and engine components. Its role is essential in maintaining the integrity and reliable operation of the engine.. Key Features. A 12mm plain washer that distributes load evenly under fasteners.. Genuine Honda OEM part ensuring exact factory specifications and tolerances.. Designed for seamless integration with Honda marine rigging and accessories.. Provides protection against wear and damage to connected surfaces.. Manufactured with durable materials optimized for marine conditions.. Maintains expected Honda marine engine performance and reliability.. Why Choose Genuine OEM. Using original Honda parts like the 90507-ZY3-000 Washer, Plain (12mm) preserves the integrity of your marine engine. OE