2006 Meritor/Rockwell Other, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner COLUMBIA 120, (Used) 2006 Freightliner Columbia 120, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number: S11-15793307, Serial Number: AVA05249306, Make: Meritor/Rockwell, Model: RR20145NFN1073, Capacity: 20,000Lbs, Ratio: 3.07, Hub Bolts: 10, Brake Type: Drum, 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 3.07, Serial# AVA05249306, Casting# AVA05249306 1FUJA6DE56LW46953