Abstract: A new "Cargo Carrier System" for offering a cleaner manner of hauling material and things such as sand or dirt, etc. The inventive device includes a box with a floor, a left side, a right side, a back side, and a tail gate. In use, the box 12 of the "Cargo Carrier System" 10 is placed inside a vehicle such as a van, with the tailgate bottom groove 34 adjacent to the rear of the vehicle. The tailgate 30 is then slid down so that the bottom edge of the tailgate 30 is engagedly received by the tailgate bottom groove 34 and the tailgate arms 36 are matingly received by the notches 33 of the left side 20 and the right side 21.