New OEM Ford Super Duty Diesel Fuel Filler Neck - not aftermarket junk!

Fits: 1999-2004 F350, F450, F550 without pickup box, diesel only - mid ship tank. 

​​​​​​​NOTE!  This one has some California emission vent on the overflow hose - you can swap the hose or instsall as is; that is the only difference from Federal and California emissions. 

OEM # has superseded 4 times. 1C3Z-9034-AA, 3C3Z-9034-PB, 1C3Z-9034-PA, 1C3Z-9034-NA based on the vent or not...current part # no longer uses this vent.