4 0 Eaton DS463 Rear Differential for a 2001 Peterbilt 378 Contact for price (Core) 2001 Peterbilt 378, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Make: Eaton, Model: DS463, Ratio: 3.90, Capacity: 20,000 Lbs, Reference images for condition For more information about... ConditionUsedRear End3.90 ratioFits To Make(s)PeterbiltFits To Model(s)378Will Fit Year(s)2001Stock NumberP-72224 MLS Number12630617CategoryDifferentials, Rear Last Updated8/30/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info