1999 Spicer/Dana DS404, Truck Tractor, Front Rears (Tandem Front), Fits to: Kenworth T800, (Used) 1999 Kenworth T800, FRONT DIFFERENTIAL GEARS ONLY- Make: Spicer, Model: DS404, Ratio: 3.70, 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 - Differential Make (Rear): Spicer/Dana - Differential Model (Rear): DS404, Ratio 3.70, Serial# TBD, Truck Year 1999 1XKDD69X6XJ829589