2015 Axle Alliance RT40-4N, Truck Tractor, Tandem Cutoffs, Fits to: Freightliner Cascadia 125, (Used) 2015 Freightliner Cascadia 125, TANDEM CUTOFF- Make: Detroit Axle Alliance, Model: RT40-4N, Front Axle Serial Number: 771AAC-A148938H, Rear Axle Serial Number: 771AAC- A148938T, Hub Bolts: 10, Brake Type: Disc, 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# 771AAC-A148938H, Casting# 771AAC-A148938H 3AKJGLD59FSGP7322