This is a fuel filler neck grommet for your 1999-04 Mustang. This part seal the filler neck into the fuel tank. Over time these can become brittle and begin to leak fuel. Get yours replaced and get your Mustang back on the road!
Ford Motor Company Genuine Parts, Motorcraft® Parts and Ford and Motorcraft Remanufactured Parts are all excellent choices when it comes to performance, longevity and value for your Mustang or SVT Lightning. And they’re all backed by a Ford Motor Company limited parts warranty*, so you know their parts you use are going to perform like they should. Put the same parts on your Lighting & Mustang that came from the factory!