16737-ZVP-000 Insulator - Overview. The 16737-ZVP-000 Insulator is an essential component in Honda marine engine systems. It is designed to serve as an insulating element within the fuel or vapor separator system, preventing unwanted transfer of heat or electrical current. By doing so, it helps maintain system integrity and ensures reliable engine operation. Manufactured as a genuine OEM part, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.