2000 Spicer/Dana DS404, Truck Tractor, Front Rears (Tandem Front), Fits to: Peterbilt 379, (Used) 2000 Peterbilt 379, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Part Number: 319950, Serial Number: 129572A, Make: Spicer, Model: DS404, Ratio: Other, Capacity: 18,000 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 Other, Serial# 129572A, Casting# 129572A 1XP5DU9X8YD512903