View 13 Photos View 0 Videos Detroit RT40-4 Cutoff for a 2019 Freightliner Cascadia 125 Contact for price (Used) 2019 Freightliner Cascadia 125, COMPLETE TANDEM CUTOFF- Part Number: C11-00042-090, Serial Number: 771199B0039020 / 771198B0039021, Make: Detroit, Model: RT40-4, Ratio: 3.42,... ConditionUsedRear End3.42 ratioFits To Make(s)FreightlinerFits To Model(s)Cascadia 125Will Fit Year(s)2019Part NumberC11-00042-090Stock NumberP-503553 MLS Number14426543CategoryFront & Rear Cutoffs (Clip Cuts) Last Updated6/14/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info