Abstract: A belly pan, or blanket, of thick, reinforced, rubber-like, flexible material is of elongated shaped outline to be mounted along the bottom of a four wheel, all terrain vehicle to protect the exposed undercarriage from damage by stumps, rocks, and the like. The belly pan is provided with a tapered front portion to be bent up and attached over the front bumper and then extends rearwardly, under the vehicle, to a portion of reduced width, formed by opposite arcuate cut-outs to accommodate the turning of the front wheels. It then extends rearwardly to between the rear wheels in a rectangular portion containing an oil drain access hole and the rearward edge is affixed to the metal pan of the vehicle. A pair of integral oppositely disposed laterally extending flaps are provided proximate the cut-outs to protect the front wheel axles.