2000 Meritor/Rockwell RT44-145, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Sterling L9522, (Used) 2000 Sterling L9522, REAR DIFFERENTIAL GEARS ONLY- Part Number: S11-21471-463, Serial Number: AVA99266594, Make: Meritor, Model: RT44-145, Ratio: 4.63, Capacity: 22,000 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 4.63, Serial# AVA99266594, Casting# AVA99266594 2FZXFWEB4YAF11372