View 1 Photo View 0 Videos Dana-Spicer R40-170 Rear Differential for a 2009 Kenworth W900 Recently Updated $1,295 USD R40-170 3.73 GOOD INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE CRITICAL CORE, Serial#: NA, Core Charge: 750.00, Ratio: 3.73, Casting#: NA ConditionUsedRear End3.73 ratioFits To Make(s)KenworthFits To Model(s)W900Will Fit Year(s)2009Part Number40-170Stock Number1205 MLS Number12685281CategoryDifferentials, Rear Last Updated3/12/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info