2017 Meritor/Rockwell MT4014X, Truck Tractor, Tandem Cutoffs, Fits to: Peterbilt 579, (Used) 2017 Peterbilt 579, TANDEM CUTOFF- Make: Meritor, Model: MT4014X, Ratio: 3.08, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Ratio 3.08, Serial# TBD, Hub Bolts 10 1XPBDP9X7HD363761