HALOGEN LAMPS. Left.2018-20. Right.2018-20. square. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Radiator Support Access Cover. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Radiator Support Panel. Bumper Cover Support Rail Nut. Nut that secures the grille. Nut used to mount Headlight. SPECIAL. Bracket U -. Bumper Cover Rail. Grille. Housing. Mounting. Radiator Access Cover. Radiator Panel. Radiator retainer. Side U -. Sight shield.