2007 Meritor/Rockwell RS23-186, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner Columbia 112, (Used) 2007 Freightliner Columbia 112, DIFFERENTIAL GEARS ONLY- Part Number: S11-24007-342, Serial Number: AVA05000488, Make: Meritor, Model: RS23-186, Ratio: 3.42, 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 3.42, Serial# AVA05000488, Casting# AVA05000488 1FUBF9CV87LZ34931