90308-ZW1-003 Nut (12Mm) - Overview. The 90308-ZW1-003 Nut (12Mm) is a self-locking nut specifically designed for use in Honda marine engine systems. It plays a crucial role in securely fastening components within the mechanical and rigging assemblies of Honda outboard motors, ensuring reliable operation and safety. Manufactured to meet strict factory specifications, this nut integrates seamlessly with existing components, maintaining the engine's optimum function and durability.. Key Features. Self-locking 12mm nut designed for reliable fastening and vibration resistance.. Genuine OEM Honda part, ensuring authenticity and precision fit.. Contributes to secure assembly of Honda marine engine rigging and accessories.. Manufactured to strict Honda specifications for dimension and tolerance.. Designed to integrate cleanly with factory hardware and seals for consistent performance.. OEM style ensures longevity, optimal durability, and performance retention.. Why Choose Genuine OEM. Using o