Your Cart Is Empty
Video
Images
Showing 1 - 7 of of 9
Video

We’re sorry. The information you have requested is temporarily unavailable.



AEM Cold Air Intake System Part #21-681C Customer Reviews

Average Rating

9 Customer Reviews

AMAZING PART!!

Reviewed by Jeff S (JBER, AK) Reviewed for a 2008 Audi A4 — Mar 27, 2015 9:44 PM

Was this review helpful?
Yes   No

Fast delivery and easy to installinstall, love the sound of it.

Very happy with this intake

Reviewed by steven a (PEARL CITY, HI) Reviewed for a 2006 Audi A4 — Jun 15, 2014 1:26 AM

Was this review helpful?
Yes   No
1 of 1 people found the following review helpful.

Nice sound to it

AEM intake

Reviewed by Grant G (GREAT FALLS, VA) Reviewed for a 2008 Audi A4 — Aug 12, 2013 1:42 PM

Was this review helpful?
Yes   No
1 of 1 people found the following review helpful.

It looks and sounds awesome. The whistle I get mixed with my turbo is amazing and turns heads. I cant wait until I get the full power from it after chipping my ride!

Overall a high quality intake

Reviewed by Jeff B (Saint Albans, VT) Reviewed for a 2006 Audi A4 — Jul 22, 2013 10:43 AM

Was this review helpful?
Yes   No
1 of 1 people found the following review helpful.

Installed this intake a week ago and I'm happy with it! Wasn't to hard to install, only took about 45min. I reset my odometer to see what gas mileage I was getting with my stock air box and then did it after I installed the AEM intake. To my surprise I got about 50 more miles to a tank with the new intake! No power gains, but sound is smooth and the turbo whistles a lot more in higher rpm ranges.

appearance

Reviewed by Sergio M (Gaston, SC) Reviewed for a 2008 Audi A4 — Apr 05, 2012 3:52 AM

Was this review helpful?
Yes   No
2 of 2 people found the following review helpful.

Its an ok product I dont like the way it looks under the hood no style the original box looked better

AEM is the way to go!

Reviewed by Anthony R (Gloucester, MA) Reviewed for a 2011 Toyota Tacoma — Sep 17, 2011 7:11 AM

Was this review helpful?
Yes   No
1 of 3 people found the following review helpful.

Sounds amazing! Can't go wrong for the price, and the performance is just perfect

High quality, easy to install

Reviewed by STEVEN J (Hainesport, NJ) Reviewed for a 2006 Audi A4 — Apr 25, 2011 4:15 AM

Was this review helpful?
Yes   No
3 of 3 people found the following review helpful.

Ordered from AutoAnything on Thursday, intake arrived on Friday. Installed intake on Audi A4, 2.0T. Istallation took approx 1 hour, and instructions were very detailed and easy to follow. I have not noticed any fuel mileage improvements yet, but engine runs smoother at low rpm/heavy loads. Overall, a good experience.

Looks good and sounds good

Reviewed by Jesus C (Antioch, TN) Reviewed for a 2007 Audi A4 — Apr 22, 2011 7:46 AM

Was this review helpful?
Yes   No
1 of 1 people found the following review helpful.

Bought CAI from AutoAnything after shopping around various websites, and they had the best price and free shipping. Got my CAI in 3 days and was easy install. Took about 30 minutes to install and it was well worth it.

My 5th car to have one and I wouldn't use another brand.

Reviewed by Joshua S (Kingston, WA) Reviewed for a 2008 Audi A4 — May 31, 2010 10:05 PM

Was this review helpful?
Yes   No
1 of 1 people found the following review helpful.

I have had this on a few of my cars and trucks and without a doubt the nicest sound, easiest to install and the best to maintain. Will keep on buying these for each of my cars as long as AEM keeps providing such an amazing product.

AEM Cold Air Intake System - 21-681C

Cold Air Intake System
(9)
  • $199.99 - $575.99
  • Free Shipping
  • Ships By 6/28
  • What Do You Drive?

Options

  • Color:
    Gun Metal Gray
  • Part #:
    21-681C
  • Gains up to 5 HP and 9 ft/lbs. of torque
  • Includes AEM filter # 21-202DK
  • Compatible with filter wrap # 1-4000 (not included)
ADD TO CART
Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat