Abstract: A bracket assembly for attachment to a motor vehicle frame member is adapted to support a frame mounted vehicle accessory, such as a step or running board. The bracket assembly comprises a pair of primary brackets, a pair of connecting pins, a support member, a mounting bracket, and a leveling bracket. The primary brackets define surfaces engaging a vehicle frame member without drilling. The connecting pins extend between and connect the primary brackets. The support member is substantially vertical and is supported by the primary brackets and connecting pins. The mounting bracket extends substantially horizontally from the support member to the accessory. The leveling bracket is fixed to the mounting bracket at a point proximate to the accessory and is fixed to the support member at a point separate from where the mounting bracket attaches to the support member.