
Installation Instructions
For Part Numbers:
400-729 850-349 Airaid Oiled Media Filter
401-729 851-349 SynthaMax Dry Media Filter - Red
402-729 852-349 SynthaMax Dry Media Filter - Black
403-729 853-349 SynthaMax Dry Media Filter - Blue
2005-07 Ford F-250/F-350 Super Duty
5.4L V8
Component Identification
1. Airaid Premium Filter 1
2. Modular Intake Tube 1
3. L– Bracket 1
4. 1/4”-20x1/2” Button Head 1
5. 1/4” Flat Washer 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.
1. Disconnect the negative battery cable.
With a 10mm wrench or deep socket, remove
the nut from the stud that holds the factory intake tube to the mounting bracket. Save the nut
for re-use later in the install.
2. Grab the factory intake tube just above the
fan shroud, and with a sharp lifting motion,
remove it from the air cleaner housing.
3. Remove the factory tube from the radiator
support by pulling the tube out of the grommets. There are no bolts holding the tube. Remove the factory tube from the vehicle.
4. Unclip the two latches that hold the air
cleaner tray into the air cleaner.
5. Slide the tray out of the factory airbox and
remove the factory air cleaner.
6. Install the Airaid Premium Filter (#1) into
the factory airbox tray, slide it back in, and relatch the two clips.

7. Install the Airaid Modular Intake Tube (#2)
into the factory airbox. It will “snap” into
place.
8. Install the L-bracket (#3) over the factory
stud re-using the nut removed in step #1. Next
install the button head bolt (#4) and washer
(#5) thru the L-bracket, and into the tube.
Leave loose until final adjustments have been
made.
9. Due to inconsistent factory tolerances, some
minor adjustment may be necessary to the factory A/C line so it will clear the Airaid MIT
near the radiator support.. When all adjustments have been completed, tighten the nut,
and button head bolt at the L-bracket.
10. 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.
11. Reconnect the negative battery cable!
Thank you for purchasing the Airaid Intake System. Contact Airaid @ (800) 498-6951 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 RESPONSIBILITY! The air filter is reusable and should be cleaned periodically.
FILTER IDENTIFICATION
850-349 Airaid Oiled Media 851-349 Airaid SynthaMax Dry Media - Red
852-349 Airaid SynthaMax Dry Media - Black 853-349 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 nonpetroleum 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 (800) 498-6951 AiraidInfo@airaid.com www.airaid.com
REV.12.2.13