Impact bar bolt. Left.2021-24. MOUNT COMPONENETS. Right.2021-24. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Frame Rail End to it's Mounting point. Bumper Impact Bar Bolt. Fastener that secures the Oil Filter Housing. Fastener. link. Bumper. Engine Oil Filter Housing. Frame Rail End. Holder. Oil Filter hsng. Rail Extension. Retaining. Screw 8X105.