Your cover is differnt but for what its worth.....
I got mine from Geno's
FUEL FILTER CAP WITH FUEL PRESSURE PORT ('00-'07 5.9L)-Dodge Cummins and Ford Power Stroke Diesel Truck Accessories - Geno's Garage
Little bit pricy but my old one was cracked and i like the look and the access for the new one.
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01 Ram 2500, 4x4 auto, aFe stage2, Turbo SR MIA, J-Hook, CFM intake, Quadzilla XZT, TST fuel box, SMARTY, Frantz bypass oil, BFG AT's, turbo back 5" straight pipe, FASS 150/150, HP intercooler boots, ISSPRO gauges, HBS leveling kit