(Used) 2006 Sterling A9500, COMPLETE REAR REAR TANDEM- Make: Detroit, Model: RT40-4N, Ratio: 3.91, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake Type: Drum, Part Number: C11-00006-117, Serial Number: 771AAC-A012675T, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921