(Used) 2013 Peterbilt 337, REAR REAR, Make: Spicer, Model: P20060, Ratio: 4.11, Spicer: HN04017829, Hub Bolts: 10, For more information about this item, gives us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON,MD 21921