View 4 Photos View 0 Videos Dana S21-170 Rear Differential for a 2009 Peterbilt 335 Contact for price (Used) 2009 Peterbilt 335, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: 513015, Serial Number: HN02983721, Make: Spicer, Model: S21-170, Ratio: 5.57, Capacity: 20,000 Lbs, For more... ConditionUsedRear End5.57 ratioFits To Make(s)PeterbiltFits To Model(s)335Will Fit Year(s)2009Part Number513015Stock NumberP-103270 MLS Number13616615CategoryDifferentials, Rear Last Updated5/31/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info