90651-ZY9-000 Circlip (Outer) (12) - Overview. The 90651-ZY9-000 Circlip (Outer) (12) is a precision-engineered securing ring integral to Honda marine engine systems. This circlip supports mechanical reliability by securely retaining components within assemblies, preventing axial movement and ensuring that parts remain correctly positioned during operation. Reliable and designed for durability, it ensures seamless integration with existing parts, maintaining optimal performance and durability..