Left.2.5 LITER PHEV. Mount bracket bolt. Right.2.5 LITER PHEV. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Floor Side Rail to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Frame Side Member to it's mounting point. stud. Floor Side. Frame Side Member. Included with: Mount bracket.