Please measure the diameter of your current fuel cap or fuel tank fill tube prior to ordering One 2 1/4” diameter, die-cast aluminum diesel fuel cap Female fitting, non-vented, 11.5 TPI NPSH, for diesel application only Includes rubber gasket seal, safety chain, and bail Approximate dimensions = Across threads cap 2 1/4”, Across threads filler neck 2 5/16” *This fuel cap fits 53 and 63 gallon D tanks *Fits Ford F600 1984 thru 1998 *Fits Ford F700 1984 thru 1998 *Fits Ford F650 1984 thru 2006 *Fits Ford F750 1984 thru 2006 *Fits GMC C6500 2003 thru 2009 *Fits GMC TopKick 1990 thru 2008 *Fits International DuraStar 2002 thru Current *Fits International 4100 2002 thru 2016 *Fits International 4200 2002 thru 2016 *Fits International 4300 2002 thru current *Fits International 4400 2002 thru 2016 *Fits International 4700 1990 thru 2002 *Fits International 4800 1990 thru 2002 *Fits International 4900 1990 thru 2001