2004 Meritor/Rockwell RS23-160, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Sterling L7500, (Used) 2004 Sterling L7500, DIFFERENTIAL GEARS ONLY- Part Number: S11-20850-643, Serial Number: AVA03163815, Make: Meritor, Model: RS23-160, Ratio: 6.43, Capacity: 23,000 Lbs, 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 6.43, Serial# AVA03163815, Casting# AVA03163815 2FZAATDCX4AM88359