2006 Axle Alliance RT40-4N, Truck Tractor, Front Rears (Tandem Front), Fits to: Freightliner M2 106, (Used) 2006 Freightliner M2 106, FRONT DIFFERENTIAL GEARS ONLY- Make: Alliance, Model: RT40-4N, Ratio: 3.91, Capacity: 20,000 Lbs Part Number: C11-00006-274, Serial Number: 771AAC-A013941H, 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 3.91, Serial# 771AAC-A013941H, Truck Year 2006 1FUJCYDJ56HW42195