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Airaid Intake System Part #401-239-1 Customer Reviews

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25 Customer Reviews

Airaid Part #: 401-239-1 Synthamax (Dry Filter) (Red)

Reviewed by Ian Michael M (FORT WORTH, TX) Reviewed for a 2014 Ford F-150 — Oct 31, 2015 7:54 AM

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The Airaid Intake System took less than 10 minutes to install. Instruction were clear and all assembly items lined up perfectly. Throttle response seems much quicker. Noise level increase is negligible. Full throttle sound is more 'throaty'. Will monitor the gas mileage variation. Airaid Throttle body spacer is next on the list.

great air cleaners!

Reviewed by Ron D (ORISKANY, NY) Reviewed for a 2014 Ford F-150 — Sep 22, 2014 8:24 PM

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didnt really notice any HP gain but it does sound great. it has a nice growl with stock exhaust. 2014 ford raptor. i think the whole HP gain is a gimmick with all the computerized engines. very easy installation! better than stock for sure!

2014 Ford Raptor

Reviewed by Brian J (Alabaster, AL) Reviewed for a 2014 Ford F-150 — Aug 08, 2014 10:29 AM

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Seems to give the truck a little better pickup but the sound is not as good as I expected. I put CAI on all me vehicles and this is the first time it did not add a deep sound.


Reviewed by Jesse H (Mount Pleasant, PA) Reviewed for a 2013 Ford F-150 — Mar 16, 2014 9:12 AM

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Was every easy to install once I found the right size locknuts,the ones they sent were to big for the bolts but other than that sounds and looks great

Great Product

Reviewed by Michael O (OMAHA, NE) Reviewed for a 2012 Ford F-150 — Mar 11, 2014 9:17 PM

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0 of 1 people found the following review helpful.

Looks great. Very functional. I can hear the turbo whistle much better now.

Increased mileage

Reviewed by Terry K (MONUMENT, CO) Reviewed for a 2012 Ford Explorer — Oct 14, 2013 9:13 AM

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1 of 1 people found the following review helpful.

I was very surprised at the MPG increase with the Airaid Intake System. The overall MPG for my truck is now 21.5. Before installing the Airaid it was 21. The last 6000 miles has averaged 22 MPG and the last 2000 miles (after installation)has averaged 24.1 MPG. I wanted to drive over a 1000 miles before I reported the results. My truck is a F-150 3.5 Ecoboost 4x4 super crew cab, 6.5' bed and 3.73 locking axle. Driving includes highway, town and mountain roads in Colorado.

works great

Reviewed by Frank G (Rio Grande City, TX) Reviewed for a 2011 Ford F-150 — Sep 15, 2013 2:08 PM

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1 of 2 people found the following review helpful.

Over all the product is very good , satisfied

Improves mileage.

Reviewed by Jack R (DAVISVILLE, WV) Reviewed for a 2011 Ford F-150 — Aug 12, 2013 10:08 PM

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Very easy to install, improves performance and increased gas mileage on my F150 ecoboost V6.

Ford F150 Airaid filter upgrade

Reviewed by Timothy Y (RATHDRUM, ID) Reviewed for a 2008 Acura RDX — Jun 12, 2013 8:23 PM

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I upgraded my intake with this airaid filter system. The instruction to install the system were great! The quality of the intake system is top of the line. It made about three miles per gallon difference in my fuel mileage and I cannot think of anything better to say about a product other than it works as advertised.


Reviewed by James F (Arnold, MD) Reviewed for a 2011 Ford F-150 — Jun 01, 2013 5:32 AM

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This is a very easy bolt on part. in addition to the Poweraid spacer my 2011 3.7l L v-6 F-150 when driven normally has gained 2 miles per gallon. when driven hard the power seems and acceleration seem to have increased noticeably. This filter gives the engine a great sound that turns heads. Performance exhaust is next.

Airaid Intake System - 401-239-1

Cold Air Dam System without Intake Tube
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  • Style:
    SynthaMax (Dry Filter) (Red)
  • Part #:
  • Wash with standard detergents
  • Rated at 1400 cfm
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