90129-ZV7-000 Hex (10X100) Bolt - Overview. The 90129-ZV7-000 Hex (10X100) Bolt is a crucial fastening component used in Honda marine engine systems. This genuine Honda OEM bolt plays an important role in maintaining the mechanical integrity of marine engine assemblies by securely fastening components together. Designed specifically to fit Honda outboard motors and related marine applications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. K