2021 PACCAR 40K, Truck Tractor, Tandem Cutoffs, Fits to: Kenworth T680, (Used) 2021 Kenworth T680, TANDEM CUTOFF- Make: PACCAR, Front Axle Model: MV2014P3DFRNN13-279, Rear Axle Model: MR2014P3SFRNN7-279, Ratio: 279, Front Axle Part Number: FOR06406495, Rear Axle Part Number: FOR06406496, Hub Bolts: 10, Brake Type: Drum Brakes, Includes extra length in frame cutoff for desired extension, 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 279, Serial# MV2014P3DFRNN13-279, Casting# MV2014P3DFRNN13-279 1XKYDP9X8MJ436745