16406-ZVT-000 Throttle Body Guard - Overview. The 16406-ZVT-000 Throttle Body Guard is a specialized protective component for Honda marine engine systems. Its primary function is to shield the throttle body from debris and contaminants that could impair engine performance. By safeguarding this vital part, the throttle body guard ensures your engine runs smoothly and reliably. Designed for clean integration with existing hardware, it maintains optimal performance and durability in harsh marine environments.. Key Features. Protects the throttle body from external debris and contamination.. Genuine Honda OEM part, crafted to factory specifications for precise fit and function.. Helps maintain consistent engine performance and extends component lifespan.. Constructed to support throttle system integrity and clean air intake flow.. Matches factory dimensions and tolerances for seamless replacement.. Ensures durable integration with existing engine hardware and seals.. Why Choose Genuine OEM