(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.