2014 Meritor/Rockwell RS23-161, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner Cascadia 113, 2014 Freightliner Cascadia 113, Meritor rear rear, Serial #: DRA13139731, ratio: 3.58, Model#:RS23161, Ratio 3.58, Serial# DRA13139731, Casting# DRA13139731 3AKBGADV8ESFW3139