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How to Install T-REX Billet Series Replacement Upper Grille - Polished on your F-150

Tools Required
  • Screwdriver set (Flat Head)
  • 10mm, 8mm, 7mm Sockets
  • Ratchet Tool
  • 1/2” Plastic Spatula
  • Pocket Knife
American Muscle
Shop Parts in this Guide

1) Turn off engine and chalk tires with stop block. Open Hood.




2) Identify & locate (10) plastic clips on top of plastic shroud and also (1) additional on each side located at the top of the headlight body panel cover. Carefully pry off to remove and then set aside for reinstallation later. STEP 3

3) Remove plastic shroud and then  set aside for reinstallation later.





4) On the inside of the inner wheel well lip, remove (2) 7mm bolts. The headlight plastic body panel should now be loose. You will need to coax panel out and off catch tabs to remove completely. The plastic wedge spatula should help.

5) Use 8mm socket to remove the (2) bolts on each side of the factory grille near the bottom corner, just outside and behind.





6) On top of the core support, remove (4) 8mm bolts.

7) Remove (4) plastic clips on upper corner near head lamp. 

8) Located next to the hood latch, disconnect (2) sensors located at the top center of grille. Free the sensor cable by pulling the plastic cable support clip.

9) The OEM Factory Grille should now be free and ready to remove. Carefully place the grille on a soft cushioned surface and prepare to remove the shutter component which is currently fastened to the backside of the factory grille.

10) Remove the (7) 10mm plastic bolts that line the outside edge and the (1) 8mm bolt that is secures the center structure.

11) Remove the (4) plastic clips located on the top lip. 12) Set factory grille aside and prepare to install your new T-REX Grille.







With the new T-REX Grille unit placed face down on a flat cushioned surface, 1) Fit the shutter component over each fixed bolt thread. There is 8 total. Place the provided 3/16” fender washer and nylon lock nut hardware over and onto the mounting points. Tighten down with your 7mm socket.


2) Make sure to reinstall the (1) 8mm bolt that is secures the center structure.

3) Flip up and stand the entire grille unit up to access top. Re-insert plastic clips which will than secure shutter component to new T-REX Grille.





4) Grille assembly is now ready to reinstall on vehicle. Match it up to factory mounting points and reinstall in the reverse order that the grille was removed. Start with the (4) 10mm factory bolts on top and the (2) 8mm bolts located near the bottom corners. 

5) Plug the (2) sensor connections back into the shutter component sensor units.

6) Place plastic radiator shroud cover over core support making sure the cold air intake lip is overlapped on top of the shroud. Align the factory mounting holes and use the (10) plastic clips to secure and fasten in position.

7) Carefully put back into place the headlight plastic body panel around the head lamp area making sure to align with the 8 tab fasteners and then firmly press into place. Use the (2) 5/32” bolts to mount and secure the panel on the inside wheel well lip. On each side of the grille at the top corners, reinsert the plastic tabs. (1) on each side.