content: Double-checked both on Ford's website as well as here on Amazon prior to ordering (both claim it is compatible), but this fuel cap does NOT fit my 2007 Mustang! Too wide!FYI, I also ordered at my own risk (Amazon reported it would not fit) a Motorcraft FC1062 Fuel Tank Cap after reading a recommendation on a Mustang Forum, but it also did not fit my car (too narrow). Had to return it.