4 0 Dana P22060 Rear Axle Housing for a 2015 Peterbilt 337 Contact for price (Used) 2015 Peterbilt 337, DIFFERENTIAL HOUSING ONLY- Part Number: 21554, Serial Number: U142377438, Make: Spicer, Model: P22060S, Ratio: 5.57, Capacity: 21,000 Lbs, For more information... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)337Will Fit Year(s)2015Part Number21554Stock NumberP-103934 MLS Number13633821CategoryAxle Housings, Rear Last Updated10/20/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info