View 4 Photos View 0 Videos Dana RSP40 Rear Differential for a 2013 Peterbilt 386 Contact for price (Used) 2013 Peterbilt 386, REAR DIFFERENTIAL GEARS ONLY- Part Number: 515354, Serial Number: HN04122095, Make: Spicer, Model: RSP40, Ratio: 3.42, Capacity: 20,000 Lbs, Reference images for... ConditionUsedRear End3.42 ratioFits To Make(s)PeterbiltFits To Model(s)386Will Fit Year(s)2013Part Number515354Stock NumberP-504154 MLS Number14427122CategoryDifferentials, Rear Last Updated6/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info