90104-ZW4-H01 Bolt (M5X12) - Overview. The 90104-ZW4-H01 Bolt (M5X12) is an essential fastening component designed specifically for Honda marine engine systems. This M5x12 metric bolt plays a crucial role in securely fastening components within the marine engine and rigging assemblies, ensuring stable operation and long-lasting reliability. Manufactured to match factory specifications and tolerances, it guarantees seamless integration with Honda marine systems, maintaining optimal performance an