This is a brand new valve stem seal for various Honda engines. The part number is the genuine Honda OEM number: 12209-300-003. It's made by SMW and comes with a warranty. The key feature is that it's made from Viton material, which is a high-performance synthetic rubber that withstands high heat and oil exposure much better than standard rubber. Valve stem seals are small but critical; they control the amount of oil that lubricates the valve stem. Worn seals can cause your engine to burn oil and smoke. If you're doing a valve job, head gasket replacement, or a full engine rebuild on a Honda, these are essential for a proper, long-lasting repair. Make sure this number matches your service manual.
