2017 Spicer/Dana DSP40/RSP40, Truck Tractor, Tandem Cutoffs, Fits to: Peterbilt 579, (Used) 2017 Peterbilt 579, TANDEM CUTOFF- Part Number: C1-1A43FA3000000001, Serial Number: HN05045033, HN05045034, Make: Spicer, Model: DSP40/RSP40, Ratio: 3.36, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Ratio 3.36, Serial# TBD, Hub Bolts 10 1XPBDP9X2HD420738