63751-ZY3-C01 R Idle Port Grom - Overview. The 63751-ZY3-C01 R Idle Port Grom is a vital rubber grommet part supporting the fuel and air system in Honda marine engine systems. This OEM component is designed to provide a secure seal and protection for the right idle port, preventing water intrusion and ensuring the engine operates reliably and efficiently. Engineered to fit exact factory specifications, it integrates seamlessly with existing components to maintain optimal performance and durability.. Key Features. Precisely designed rubber grommet for sealing the right idle port in Honda marine engines.. Genuine OEM component ensuring exact factory dimensions and tolerances.. Helps prevent water intrusion and maintain proper idle air and fuel control.. Durable material engineered for marine environment resistance.. Seamless integration with existing engine hardware and systems.. Supports reliable engine operation and prolonged component life.. Why Choose Genuine OEM. Using original Hond