2014 Spicer/Dana Other, Truck Tractor, Tandem Cutoffs, Fits to: Mack CXU613, (Used) 2014 Mack CXU613, TANDEM CUTTOFF- Make: Spicer, Model: RST41, Serial Number: HN04261655, Part Number: 513238, Custom Number: 21362593, Ratio: 3.55, 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 3.55, Serial# HN04261655, Hub Bolts 10 1M1AW07Y3EM039213