Airaid 400-231 Installation Instructions

Installation Instructions

For Part Numbers:

400-231 720-478 Airaid Oiled Media Filter
401-231 721-478 SynthaMax Dry Media Filter - Red
402-231 722-478 SynthaMax Dry Media Filter - Black
403-231 723-478 SynthaMax Dry Media Filter - Blue

2009-2010 Ford F-150 5.4L
2007-14 Ford Expedition 5.4L

Component Identification

1. Airaid Premium Filter 1

2. Airaid Intake Tube 1

3. Front Panel 1

4. Rear Panel 1

5. Extension Panel 1

6. Silicone Reducer Coupler 1

7. Silicone Hump Hose 1

8. Weather Strip 23” 1

9. 6-32 x 5/16” Screw 9

10. 6-32 Keps Nut 9

11. #6 Flat Washer 9

12. 8-32 x 3/8” Button Head Screw 2

13. #52 Hose Clamp 1

14. #64 Hose Clamp 3

15. T-20 Torx Driver 1

Full color instructions can be viewed on our web site at Airaid.com. Use the Product Search function to find your part number, and click View Details.

A

1. Disconnect the negative battery cable!

Loosen the two intake clamps and remove the Factory
intake tube.

2. A.) Disconnect the Mass Air Flow (MAF) Sensor.

B.) Unfasten the three airbox clips on the left side, and

remove the upper half of the factory airbox.

3. Remove the factory air filter from the lower half of
the airbox.

Note: Tab is outside

4. Assemble the two Quick Fit panels (#3 & #4) as

shown using four 6-32 screws (#9) flat washers (#11)
and kep nuts (#10).

#52

#64

5. For F-150 models only:
Fasten the Extension panel (#5) to the outside of the
panel assembly using the remaining 6-32 screws, flat
washers, and kep nuts.

Tabs

6. A.) Install the Silicone Hump Hose (#7) and two #64

Hose Clamps(#14) onto the Quick Fit assembly. Leave
the clamps loose for now.
B.) Install the assembly onto the lower half of the fac­tory airbox. Slide the metal tabs into the airbox slots,
and fasten the 3 airbox clips.

7. Install the Silicone Coupler (#6), one #64 Hose
Clamp(#14), and the #52 Hose clamp (#13) onto the
engine air inlet. Leave the clamps loose for now.

8. Transfer the MAF sensor into the Airaid Intake
Tube (#2) and secure using two 8-32 x 1/2” button
head screws (#11). Do Not Use The Factory Torx

Head Screws !

9. A.) Insert the Airaid Intake Tube into the couplers as

shown. Check for alignment, and tighten all clamps.

B.) Re connect the Mass Air Flow Sensor.

11. Double check your work!

Make sure there is no foreign material in the
intake path. Make sure all clamps, hoses,
bolts, and screws are tight.
Periodically check the tightness of all hose
clamps.

10. Install the Airaid Premium Filter (#1) to the mount­ing flange inside the quick fit assembly. Complete the
installation by attaching the Weather Strip (#5) to the
top of the panels as shown.

12. Re-connect the negative battery
cable!

Thank you for purchasing the Airaid Intake System. Contact Airaid @ [phone] 8:00 AM - 5:00 PM MST week­days for questions regarding fit or instructions that are not clear to you. Your Airaid Intake System was carefully inspected and
packaged. Check that no parts are missing, or were damaged during shipping. If any parts are missing, contact Airaid. The air
filter element is protected from direct exposure to water and debris; care should be taken not to drive through deep water. WA­TER INGESTION IS THE DRIVERS RESPONSIBILTY! The air filter is reusable and should be cleaned periodically.

FILTER IDENTIFICATION

720-478 Airaid Oiled Media 721-478 Airaid SynthaMax Dry Media - Red

722-478 Airaid SynthaMax Dry Media - Black 723-478 Airaid SynthaMax Dry Media - Blue

For your Oiled media filter we

suggest using the AIRAID Filter

Tune-Up Kit!

Synthamax Air Filters do not require
oil. Service air filter as needed by
cleaning with common non-petroleum
all-purpose household cleaner and wa­ter. Simple Green®, Formula 409® or
equivalent works great. Apply cleaner
to outside of air filter and allow to
soak. Then flush filter clean from the
inside out with a garden hose and re­peat steps if necessary. Do not apply
high pressure water or air to clean fil­ter. Allow filter to air dry and reinstall.

P/N 790-551 Aerosol Spray
P/N 790-550 Squeeze Spray

Airaid Filter Co. 2688 E Rose Garden Ln. Phoenix AZ 85050 [phone] [e-mail] www.airaid.com REV.04.09.04