For 1999-2003 F250/F350/F450/F550 Super Duty 7.3L V8. You can simply remove your old cap and screw your new cap on its place using a 1" socket wrench. Material:6061-T6 Billet aluminum,which is more durable than OEM's plastic cap.Can prevent from causing fuel leaks,air leaks,or other fuel system issues because of the cracked plastic cap.
