12160-ZY3-000 Sealing (22MM) Bolt - Overview. The 12160-ZY3-000 Sealing (22MM) Bolt is a critical component within Honda marine engine systems. It serves a vital role in providing a robust watertight seal, specifically engineered to fit precisely within the engine's sealing system, helping to prevent leaks and maintain the engine's optimal operation. Designed to seamlessly integrate with existing Honda marine hardware, this bolt ensures reliable performance and durability under marine conditions