4 0 2017 Detroit RT40.0-4 Rear Differential for a Freightliner Cascadia $250 USD (USED) Detroit RT40.0-4 Ratio: 3.08 Side Gear Splines: 41 W/ Locker: NO Cast#: R6813510805 ConditionUsedFits To Make(s)FreightlinerFits To Model(s)CASCADIAStock Number25794725 MLS Number13636611CategoryDifferentials, Rear Last Updated6/18/2025 LocationDes Moines, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info