Airaid 400-273 User Manual
Installation instructions, Component identification
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
1. Disconnect the negative battery cable!
Loosen the two intake clamps, unclip the coolant line,
and remove the Factory intake tube.
3. Remove the factory air filter from the lower half of
the airbox.
4. Assemble the two Quick Fit panels (#3 & #4) as
shown using four 6-32 screws (#7) flat washers (#9)
and kep nuts (#8).
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.
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.) Mount the Intake Tube to the Rear Panel us-
ing the two 1/4-20 Button Head Bolts (#11) and 1/4”
Flat washers (#12).
B.) Slide the Hump Hose and clamps onto the en-
gine air inlet, check for alignment, and tighten the
clamps.
2. A.) Disconnect the Mass Air Flow (MAF) Sensor .
B.) Unfasten the thr ee air box clips on the left side,
and remove the upper half of the factory airbox.
A
9. Re connect the Mass Air Flow Sensor.
Note: Tab is outside
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
Tabs
B
A
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.