2006 Meritor/Rockwell RT40-145, Truck Tractor, Tandem Cutoffs, Fits to: Kenworth T600, (Used) 2006 Kenworth T600, TANDEM CUTOFF- Make: Meritor, Model: RT40-145, Ratio: 3.58 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 3.58, Serial# Other, Casting# Other 1XKADB9X46J102185