Abstract: A vehicle mounted storage unit, adapted to be mounted to a floor portion of a vehicle having a sidewall and a wheel well that extends outwardly from the sidewall by a first distance, includes a mounting bracket fixed to the floor portion of the vehicle and a plurality of connecting members that connect the mounting bracket to the floor portion. The mounting bracket has a width that is less than the first distance, and the mounting bracket is fixed to the floor portion of the vehicle at a mounting point adjacent the sidewall of the vehicle and adjacent the wheel well of the vehicle. The storage unit is provided with a cabinet that is attachable to the mounting bracket, with the cabinet being removable from the mounting bracket and having a width not greater than the first distance. The cabinet is adapted to be mounted adjacent the sidewall of the vehicle and adjacent the wheel well of the vehicle, with no portion of the cabinet extending beyond the wheel well of the vehicle.