2018 Detroit RT40-4N, Truck Tractor, Axle Housings (Rear), Fits to: Freightliner Cascadia 125, (Used) 2018 Freightliner Cascadia 125, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-501, Serial Number: 771AAC-A223772T, Make: Detroit, Model: RT40-4N, Ratio: 3.23, Capacity: 20,000 Lbs, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# 771AAC-A223772T, Casting# 771AAC-A223772T, Hub Bolts 10 1FUJGLDR1JLJF0293