Abstract: A mounting support bracket permits an attachment of a storage cart on a side wall of a utility vehicle. The mounting support bracket includes a base bar coupled to the side wall of the utility vehicle and oriented to extend horizontally, a pair of adjustable bar members slidably mounted to the base bar and oriented to extend vertically, each adjustable bar member in the pair of bar members designed to slidably adjust in a lateral direction, upward direction and downward direction relative to the base bar to a desired position, and a pair of hook members coupled to the pair of adjustable bar members. The hook members support the storage cart thereon, thereby permitting the storage cart to be secured to the utility vehicle.