2017 Peterbilt 579, Truck Tractor, Air Dryers, Fits to: Peterbilt 579, (Used) 2017 Peterbilt 579, AIR DRYER- Make: TRR, Model: AD-IS, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Truck Year 2017, VIN 1XPBDP9X2HD420738, Material Steel 1XPBDP9X2HD420738