2016 Dana S23-190, Truck Tractor, Axle Housings (Rear), Fits to: Peterbilt 579, (Used) 2016 Peterbilt 579, COMPLETE FRONT DIFFERENTIAL HOUSING ONLY- Make: Spicer/Dana, Model: S23-190, Serial Number: HN04727453, Part Number: 515727, 7085061, C2-5GP2BN6000000001, Ratio: 2.69, Hub Bolts: 10, Brake Type: Disk, Capacity: 20,000Lbs, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Serial# HN04727453, Casting# HN04727453, Hub Bolts 10 1XPBDP9X7GD298229