When your check engine light comes on your 1999-2004 Ford Mustang it just might be your Fuel filler neck.
The check engine lights come on when there is a pressure leak in the fuel tank system.
Very often this is the fuel filler neck.
When replacing the fuel filler neck or "gas tank pipe" it is commonly called; you will also want to replace the fill neck grommet also.
Above is and instructional video how to replace your 1999-2004 Mustang fuel fill pipe and grommet.
Where to Buy?
See the neck here 1999-2004 Mustang Fuel Filler Neck
See the Grommet Here1998-1999 Ford Mustang Fuel Filler Neck Grommet Seal
