An apparatus for assisting and guiding deployment of a side airbag through a deployment seam of a seat cover for a vehicle seat having a seat frame includes an airbag assembly connectable to a support portion of the seat back frame, an intensifier pocket having an inboard and outboard panel, and an elongate support rod releasably connectable to the seat back frame of the vehicle seat for closing and anchoring an opening in the pocket. Each panel has a first peripheral portion connected to opposite edges of the deployment seam in the seat cover to be forced open during inflation of the side airbag, second peripheral portions extending inwardly toward the seat back frame where the inboard and outboard panels are connected to one another, and third peripheral portions defining an opening in the pocket of sufficient size to allow the pocket to be positioned over the airbag assembly and support portion of the seat back frame. The support rod can be engaged through at least one sleeve formed along the third peripheral portion of each panel for closing and anchoring the opening in the pocket.