Airaid 400-273 Installation Instructions

Installation Instructions

For Part Numbers:

400-273 720-478 Airaid Oiled Media Filter
401-273 721-478 SynthaMax Dry Media Filter - Red
402-273 722-478 SynthaMax Dry Media Filter - Black
403-273 723-478 SynthaMax Dry Media Filter - Blue

2011-14 Ford Super Duty F-250/F-350

6.2L V8

Component Identification

1. Airaid Premium Filter 1

2. Airaid Intake Tube 1

3. Front Panel 1

4. Rear Panel 1

5. Urethane Hump Hose 1

6. Weather Strip 22 1/2” 1

7. Split Loom 20” 1

8. 6-32 x 5/16” Screw 4

9. 6-32 Keps Nut 4

10. #6 Flat Washer 4

11. 8-32 x 1/2” Button Head Screw 2

12. 1/4-20 x 1/2”Button Head Bolt 2

13. 1/4” Flat Washer 2

14. #68 Hose Clamp 2

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, unclip the coolant line,
and remove the Factory intake tube.

2. A.) Disconnect the Mass Air F low (MAF) Sensor .

B.) Unfasten the thr ee a ir box clip s 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 (#7) flat washers (#9)
and kep nuts (#8).

Tabs

5. 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.

B

A

6. . Transfer the MAF sensor into the Airaid Intake

Tube (#2) and secure using two 8-32 x 1/2” button
head screws (#10). Do Not Use The Factory Torx Head

Screws

7. Install the Hump Hose (#5), and the clamps (#13)

onto the Intake Tube. Slide the hump hose and clamps
down the tube as far as they will go and leave the
clamps loose for now.

8. A.) Mou nt the In take Tub e t o t he Rear Panel us-
ing the two 1/4-20 Button Head Bolts (#11) and 1/4”
Flat washers (#12).
B.) Slide th e Hump Hose an d clamps ont o t he en­gine air inlet, check for alignment, and tighten the
clamps.

9. Re connect the Mass Air Flow Sensor.

Split loom

10. Slide the 20” section of Split Loom (#8) over the

Coolant line to protect it from chaffing on the intake
tube.

B

A

11. A) Install the Air aid Pr emiu m Filter (#1) to t he

mounting flange inside the quick fit assembly. B)
Complete the installation by attaching the Weather
Strip (#6) to the top of the panels as shown.

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.

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 RESPONSIBILITY! 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!

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

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.

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

REV.12.6.13