(Used) 2013 Kenworth T660, TANDEM CUTOFF- Make: Spicer, Model: DSP40, Ratio: 3.36, Part Number: 321280, Hub Bolts: 10, Brake Type: Drum Brakes, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921