2015 Detroit RT40-4N, Truck Tractor, Complete Axle-Rear Rears, Fits to: Freightliner Cascadia 125, (Used) 2015 Freightliner Cascadia 125, COMPLETE REAR REAR TANDEM- Part Number: C11-00006-976, Serial Number: 771AAC-A151452T, Make: Detroit, Model: RT40-4N, Ratio: 3.31, Capacity: 20,000 Lbs, 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 3.31, Serial# 771AAC-A151452T, Casting# 771AAC-A151452T 1FUJGLD68FLGU4378