Airaid 450-234 Installation Instructions

Installation Instructions

For Part Numbers:

450-234 720-448 Airaid Oiled Media Filter
451-234 721-448 SynthaMax Dry Media Filter - Red
452-234 722-448 SynthaMax Dry Media Filter - Black
453-234 723-448 SynthaMax Dry Media Filter - Blue

2008-10 Ford Focus 2.0L I-4
Non PZEV Vehicles

B.

D.

Component Identification

1. Airaid Premium Filter 1

2. Airaid Intake Tube 1

3. MAF Panel (Auto Trans) 1

4. Bottom Panel 1

5. MAF Panel (Manual) 1

6. Hump Hose 1

7. Weather Strip 22” 1

8. 6-32x5/16” Phillips Screw 7

9. #6 Flat Washer 7

10. 6-32 Keps Nut 7

11. 1/4”-20 Button Head Bolt 2

12. 1/4” Flat Washer 7

13. 1/4”-20x5/8” Hex Bolt 3

14. 1/4”-20 Lock Nut 3

15. 8-32 x 3/8” Button Head Screw 2

16. #44 Hose Clamp 2

17. Side Bracket 1

18. Front Bracket 1

19. Billet Rivet 1

20. Small Grommet 1

21. Large Grommet 1

22. T20 Torx Bit 1

B.

A.

1. Disconnect the negative battery cable!

Remove the three bolts that secure the intake scoop to
the radiator support. The two long bolts will be reused
in step #14.

4. Pull straight up, and remove the airbox assembly
from the vehicle. It is only held in by one grommet at
this point.

C.

A.

2. A.) Pull the red tab on the bottom, and then

squeeze the Mass Air Flow sensor wiring connector
and disconnect it from the sensor. B.) Push the tab, and
disconnect the breather hose from the plastic elbow. C.)
Loosen the two factory clamps on the flexible intake
tube. D.) Remove the Oetiker clamp, and then carefully
remove the small plastic elbow from the flexible intake
tube leaving the breather hose connected to the elbow.

5. Remove the scoop from the factory airbox. Next, us­ing the supplied #20 Torx bit, remove the Mass Air
Flow sensor from the airbox lid. These parts will be re­installed in steps #10 & 13.

3. Remove the factory flexible intake tube from the vehicle.
Remove the Oeticker clamp, and then remove the large
plastic elbow from the flexible intake tube. It will be
reused in step #12.

6. Remove one bolt that secures the brace to the inner
fender. It will be reinstalled in step #15.

7. Install the supplied hump hose (#6), and two #44
hose clamps (#16) onto the throttlebody as shown.
Tighten only the clamp on the throttlebody.

8. Install the small grommet (#20) into the hole on the
top of the Airaid intake tube (#2). Now install the large
grommet (#21) into the hole on the side of the tube.

9. Auto Transmission vehicle only: Assemb le the
two Cool Air Dam panels (#3 & #4) using 7 screws
(#8), washers (#9), and nuts (#10) as shown. Make sure
that the bent flanges where the panels screw together,
are on the outside of the box. Note: Use panel #3 with

tag marked “AUTO”.
Manual Transmission vehicle only: Assemble th e

two Cool Air Dam panels (#4 & #5) using 7 screws
(#8), washers (#9), and nuts (#10) as shown. Make sure
that the bent flanges where the panels screw together,
are on the outside of the box. Note: Use panel #5 with

tag marked “Manual”.

10. Insert the Airaid intake tube thru the CAD panel

and then reinstall the Mass Air Flow sensor from step
#5 using the two supplied 8-32x3/8” button head
screws (#15). Do Not Use The Factory Screws!

11. Now turn the intake tube counterclockwise until
the mounting holes align thru the panel. Secure the tube
to the panel using the two 1/4”-20 button head bolts
(#10) and 1/4” washers (#11).

12. Insert the factory elbow removed in step #3 into the
large grommet on the side of the intake tube as shown.

A drop or two of dish soap or something similar will
help make the elbow slide thru the grommet easier.

B.

A.

13. A.) Install t he fr ont br acket (#18) onto the fr ont

of the CAD as shown using one 1/4”-20x5/8” hex bolt
(#13), two 1/4” flat washers (#12), and one lock nut
(#14). B.) Next mount th e factory scoop to t he
bracket as shown using one 1/4”-20x5/8” hex bolt
(#13), two 1/4” flat washers (#12), and one lock nut

A.

B.

Billet Rivet

14. Install the CAD into the vehicle making sure to slip

the intake tube into the hump hose as you lower the
assembly into place. After you have the intake tube
correctly located into the hump hose, insert the billet
rivet (#19) thru the CAD and into the factory grommet
in the inner fender well. Tighten the hose clamp on the
hump hose and then reinstall the two factory bolts re­moved in step #1 that secure the scoop to the radiator
support. Reconnect the Mass Air Flow sensor!

17. Double check your work!

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

15. Install the side bracket (#17) onto the CAD as
shown using the factory bolt removed in step #6, and
one 1/4”-20x5/16 hex bolt (#13), two 1/4” flat washers
(#12), and one lock nut (#14).

18. Re-connect the negative battery
cable!

Full color instructions can be viewed on our web site at Airaid.com. Use the Product Search

16. A.) Reinstall the small br eather hose into the

grommet on the top of the intake tube. Reconnect the
large breather connector to the factory elbow. B.) Next
mount the Airaid Premium Filter (#1) onto the intake
tube as shown and tighten the clamp. C.) Install the
weatherstrip (#6) onto the top of the CAD panels as
shown. Start at the front of the vehicle and work your
way towards the fender.

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

function to find your part number, and click View Details.

air filter is reusable and should be cleaned periodically.

FILTER IDENTIFICATION

720-448 Airaid Oiled Media 721-448 Airaid SynthaMax Dry Media - Red

722-448 Airaid SynthaMax Dry Media - Black 723-448 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

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

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.

REV.10.25.13