View 7 Photos View 0 Videos Dana 337 Rear Axle Assembly for a 2014 Peterbilt 337 Contact for price (Used) 2014 Peterbilt 337, COMPLETE REAR DIFFERENTIAL- Part Number: 512313, Serial Number: HN04175512, Make: Spicer, Model: S21-170, Ratio: 4.78, Capacity: 16,000 Lbs, Hub Bolts: 10, Brake... ConditionUsedRear End4.78 ratioFits To Make(s)PeterbiltFits To Model(s)337Will Fit Year(s)2014Part Number512313Stock NumberP-505798 MLS Number14429874CategoryAxle Assemblies, Rear Last Updated6/14/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info