2006 Meritor/Rockwell RD20-145, Truck Delivery, Front Rears (Tandem Front), Fits to: Sterling ACTERRA, (Used) 2006 Sterling Acterra, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Part Number: S11-19539-586, Serial Number: AVA05281519, Make: Meritor, Model: RD20-145, Ratio: 5.86, Capacity: 20,000 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 5.86, Serial# AVA05281519, Casting# AVA05281519 2FZHCHDCX6AW69082