Airaid 401-740 Installation Instructions

INSTALLATION INSTRUCTIONS

#401-940 Modular Intake Tube

OR

#401-740 Airaid Jr. Kit

2004-08 Ford F-150 5.4L

2006-08 Lincoln LT 5.4L

Thank you for purchasing the Airaid Modular Intake Tube or Airaid Jr. Kit. Please read the instruction
manual carefully before proceeding with the installation. 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 Modular Intake
Tube or Airaid Jr. Kit was carefully inspected and packaged. Check that no parts are missing, or were damaged
during shipping. If any parts are missing, contact Airaid.

Thank you for selecting Airaid.

Packing List:

KIT940Tube Modular Intake Tube 1
851-349 Airaid Premium Filter 1
KIT940HP Hardware & Instructions 1

- KIT9401B Bracket 1

- KIT15DHC3050 ¼-20 Button Head Bolt 1

- KIT60C250HCS M6 – 1x25 Hex Bolt 1

- KIT09LW Z025 ¼” Lock Washer 2

- KIT131MOUNT Black Hose Mount 1

- KIT09FWZ019 ¼” SS Flat Washer 1

Tools Required for this Installation:

5/32 Allen Wrench

10mm Socket w/Ratchet,

8mm wrench

Installation Instructions. Read Me!

I DISCONNECT NEGATIVE (-)

BATTERY CABLE
II Remove Factory Intake Air Tube

a) Remove the mounting bolt behind the factory air

intake tube. See Fig#1

b) Firmly grasp the factory air intake and lift sharply

to unsnap it from the factory air box. See Fig#2

c) Pull the factory air intake tube free from the

fender opening and remove from vehicle. See

Fig#3

III Airaid Modular Intake Tube
Installation

a) Mount the Airaid bracket onto the Airaid tube

using the ¼-20 button head bolt and lock washer

provided. See Fig#4 (

for easy adjustment later in the installation)

b) Position the Airaid tube in place of the factory air

intake assembly. See Fig#5

c) Push the Airaid tube into the factory air box

opening until it snaps into place.

d) Align the Airaid bracket on the Airaid tube to the

factory mounting hole and secure using a #6 bolt

and lock washer provided.

e) Mount the factory radiator overflow hose to the

driver’s side of the engine compartment with the

black plastic hose mount provided. Insert the

mount through the factory hole in the upper fender

and secure by pushing a ¼ washer over the clip.

See Fig#6

f) Tighten the previously installed button head bolt

fastening the bracket to the Airaid tube.

IV Airaid Jr. P/N 401-740 Replacement Filter

a

) If you purchased the Airaid Jr. kit P/N 401-740,

replace the factory air filter with the Airaid
Premium Filter included in the Airaid Jr. kit.

V Re-Connect Accessories

a) Re-connect negative battery cable.

Fig#1

Hint: leave the bolt loose

Fig#2

Fig#3

Fig#4

Fig#5

Push tube into
factory air box

Fig#6

Grasp & Lift Sharply

g

g

m

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
cleaner to outside of air filter and allow to soak. Then flush filter clean from the inside out with a
and repeat steps if necessary. Do not apply high pressure water or air to clean filter. Allow filter to air dry
and reinstall

.

reat. Apply

arden hose

Rev. 11/15/10

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