(Used) 2014 Mack CXU613, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- 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