Mustang Roush GT Cold Air Intake Kit (2010-2013) Installation Instructions

Tools Required:
  • Ratchet & Socket Set
  • Torx Screwdriver/Socket
  • Screwdriver
Install Difficulty:
  • Difficulty
  • Easy Project
1. To get started installing your new Mustang Roush 420131 Cold Air Kit, review the stock air intake system and your new cold air kit to make sure you have all of the materials you need for the installation.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
2. Locate and loosen the bolt that secures the clamp connecting the stock intake tube and the stock air box. This will require an 8mm socket.
Mustang Roush Cold Air Kit Install Image
3. Locate and disconnect the stock mass airflow sensor by using your hand to gently pull back the small red clip on it's underside. Be careful with this sensor, since you will need to re-install it on the new Roush Cold Air Intake Kit at the end of the installation. Then, using your hand, carefully remove the secondary clip that holds the sensor wire harness to the stock air box.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
4. Locate and remove the bolt and washer that is used to hold the stock air box to the vehicle. You will use a 10mm socket for this. This bolt and washer will be re-used later in the installation.
Mustang Roush Cold Air Kit Install Image
5. Locate and disconnect the sound induction tube from the stock air box.
Mustang Roush Cold Air Kit Install Image
6. Carefully lift and remove the factory Mustang cold air intake from the vehicle. You can see the image of the open area with stock air box removed below.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
7. Carefully remove the stock mass airflow sensor housing from the stock air box. There are two screws that can be removed with a T-20 Torx screwdriver/socket. Be careful with this housing, since you will re-install it with the original screws on the new Roush Cold Air Intake tube.
Mustang Roush Cold Air Kit Install Image
8. Carefully re-install the stock mass airflow sensor housing on the new Roush Cold Air Intake tube, utilizing the two screws that you removed just a moment ago. They will be installed using a T-20 Torx screwdriver/socket. Install it with the black plastic side up and the metal side down, which was the same direction that the stock housing was installed.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
9. Attach the new Roush cold air intake tube to the new Roush air filter by hand. Carefully align the new Roush Cold Air Intake tube and the new Roush air filter using the notch marks on the black plastic pieces. You will carefully twist the two until the notch marks line up together. Then, tighten the clamp using a screwdriver.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
10. Carefully remove the grommet and sleeve from the stock air box. These items will be re-installed in the same location on the new Roush air box. Then, remove the rubber mounts (two) on the bottom of the stock air box. These two pieces will also be re-installed in the same location on the new Roush air box.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
11. Place the new Roush air box into the vehicle. Line up the rubber mounts (two) on the bottom of the air box with the corresponding spots on the chassis. Once they are in place, tuck the stock rubber air inlet opening into the new Roush air box front air inlet.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
12. Using a 10mm socket, re-install the stock bolt and washer that are used to hold the new Mustang cold air kit to the vehicle.
Mustang Roush Cold Air Kit Install Image
13. By hand, install the two metal clips (included) on the new Roush air box.
Mustang Roush Cold Air Kit Install Image
14. Attach the new air filter assembly to the Mustang cold air intake tube by hand, then tighten the clamp using an 8mm socket.
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
15. Attach the new Mustang air filter to the new air box using two 10mm bolts (included).
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
Mustang Roush Cold Air Kit Install Image
16. Plug the stock mass airflow sensor into the housing that is now located on the new Roush intake tube. Make sure the small red clip side is down.
Mustang Roush Cold Air Kit Install Image
17. Review your installation to ensure proper fit and alignment. Installation of your new Roush Mustang Cold Air Intake is complete!
Mustang Roush Cold Air Kit Install Image