Features: 1.Material:Made of high-quality ABS plastic and sealing rubber material. 2.Replacement OEM Number:FC975, XU5Z-9030-MA. 3.Fit for 2003-2007 E-150 | 2000-2001 E-150 Econoline | 2004-2007 E-250 | 1999-2001 E-250 Econoline | 2003-2004 E-350 Club Wagon | 1997-2001 E-350 Econoline Club Wagon | 2003-2007 E-450 Super Duty | 2000 2003 Excursion | 1997-2008 2010-2015 Expedition | 1997-2009 F-150 | 2004 F-150 Heritage | 1997-1999 F-250 | 1999-2009 F-250 F-350 F-450 F-550 Super Duty | 2000-2005 Navigator | 1998-1999 Windstar. 4.The locking gas cap provides a tight seal to keep the vehicle's fuel tank closed; sealed fuel tank reduces vapor emissions and helps protect the environment; prevents fuel loss. 5.Please confirm the OE of your model and parts before.