2012 Meritor/Rockwell MT4014X, Truck Tractor, Tandem Cutoffs, Fits to: Western Star 4900 FA, (USED) 2012 Western Star 4900 FA - Tandem Cutoff - Make: Meritor. Model: MT-40-14X. Ratio: 3.55 Hub Bolts: 10 Brake Type: Air Wedge. 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 3.55, Serial# FOR01614842, Casting# FOR01614842 5KJJAEDR1CPBP7620