4 0 Detroit R21-4N Rear Differential for a 2017 Freightliner M2 106 Contact for price (Used) 2017 Freightliner M2 106, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: C11-00008-319, Serial Number: 742821-A146375, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 21,000 Lbs... ConditionUsedRear End5.56 ratioFits To Make(s)FreightlinerFits To Model(s)M2 106Will Fit Year(s)2017Part NumberC11-00008-319Stock NumberP-104034 MLS Number13634143CategoryDifferentials, Rear Last Updated6/9/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info