Grams Performance Honda Cushion Large O-Ring 21.3mm OD 13.7mm ID

This large Viton O-ring from Grams Performance measures 21.3mm on the outside and 13.7mm on the inside. It's designed to act as a bottom cushion seal for fuel injectors, specifically fitting Honda intake manifolds. Viton is a well-known material for fuel system components because it holds up well against harsh fuel mixtures and high temperatures, helping to prevent leaks and ensure a solid seal.

This particular O-ring is often used when replacing fuel injectors or when working on fuel system upgrades. Its specific dimensions and material make it a reliable choice for maintaining the integrity of your fuel system, especially in applications where a robust seal is critical. Having the right size and material for your injector seals is important for proper engine operation and to avoid fuel vapor leaks.