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How to Install Roush Cold Air Kit on your Mustang

Installation Time

1 hours

Tools Required
  • 10 mm Socket
  • Pliers
  • Flat-head Screwdriver
  • Trim Tool
American Muscle
Shop Parts in this Guide



The following section will guide you through the removal of the stock components. Special care should be taken to label fasteners and parts that are taken off during this procedure since many will be reused.

1. Cover both fenders with fender covers to protect the vehicle fi nish.

2. Disconnect the battery ground cable.

3. Loosen the clamp at the air box from the intake tube.

4. Release the two (2) latches holding the box lid to the lower box.

5. Remove the air box lid and fi lter. Retain the lid for use during installation.

6. Using the 10 mm socket, remove the bolt holding the air box to the inner fender. Retain the bolt as it will be used during installation.

7. Remove the air box tray and dirty air inlet from the vehicle.

8. Remove the two (2) quick connect fi ttings from the stock clean air tube.

9. Remove the clamp on throttle body end of the clean air tube and remove the air tube.

10. Remove the steel bushing and the two (2) rubber grommets from the stock air box. Retain these for use during installation.

11. Remove the rubber isolator from the bottom of the stock air box tray and retain for use during installation.


1. Install the rubber grommet that was removed from the stock air box into the ROUSH air box (P/N: 131550-9A612), then install the steel bushing.

2. Install the second grommet onto the air box (P/N: 131550-9A612).

3. Install the rubber isolator into the bottom of the air box (P/N: 131550-9A612).

4. Insert the dirty air inlet (P/N: 1315-9F763-A) into the air box (P/N: 131550-9A612).

5. Place the bulb seal (P/N: 131550-9C664) onto the top of the air box (P/N: 131550-9A612) and clip into the holes. Trim ends as required.

6. Insert the air box assembly into the vehicle.

7. Using a 10 mm socket and the bolt removed from the stock air box, attach the air box to the vehicle. Torque to 8 Nm.

8. Loosely attach the air fi lter (P/N: 131550-9601R) to the fi lter tube (P/N: 131537-12B579), leave the clamp loose so you can hide it once installed in the vehicle.

9. Slide the fi lter tube assembly into the air box. Using a 10 mm socket, install the two (2) supplied bolts (P/N: W500224). Torque to 10 Nm. Rotate the air fi lter clamp to a suitable location and torque to 3 Nm.

10. Install the clean air tube (P/N: 131537-9R504) and tighten clamps at the throttle body and fi lter tube. Tighten clamps to 3 Nm.

11. Connect the two (2) quick connect fi ttings previously removed to the new clean air tube.