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Your cart is empty.The AEM 21-750 Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Audi A4 and A5 models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box location and can optionally be protected by an AEM embossed heat shield which is designed to reduce intake air temperature and increase horsepower. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). The air intake system is easy to install with commonly available tools and it is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal. View the AEM 21-750 vehicle applications to determine the legal status for each vehicle.
Fred003
Reviewed in Canada on August 5, 2024
Looks good
adam absher
Reviewed in the United States on March 9, 2024
The entire install took about 45 minutes with common hand tools. As others have mentioned, there is zero slack in the MAF wiring harness. No check engine light or warnings after install but a little more slack would be nice. I opted to leave the top off. Would I buy it again? Yes
A.D
Reviewed in the United States on June 4, 2022
Very good and easy to install
Customer
Reviewed in the United States on July 12, 2020
I like it, was a little hard to install, took about an hour but it was worth it, car sounds more agressive now, and the turbo whistle makes you smile Everytime, don't think twice, just go for it, the heat shield design looks realy good. 5 star.
Jerry B
Reviewed in the United States on June 1, 2020
Looks good in the car. Can hear the turbo alot better. Great part for the price. Nothing notably different power wise.
Adrien
Reviewed in the United States on August 14, 2019
My car is runnning great and i love the sound. Overall easy to install!
Matthew S.
Reviewed in the United States on May 17, 2019
Product did not fit very well. AEM cover was scuffed up really well like it had been used, cleaned and reshipped. Very disappointed.
Tanner Delorme
Reviewed in Canada on March 27, 2019
This product is great. Comes with dyno sheets and easy install instructions and high quality parts. And was delivered 3 days early. Very happy with the purchase
dustin w.
Reviewed in Canada on October 27, 2019
Did not fit my 2015 A4. The MAF cable was to short to reach new location. I returned it
Jonathan Lyons
Reviewed in the United States on February 15, 2018
Product is exceptional. The install was very easy and fitment was great. Don't feel a HP difference, but throttle response was better. Intake makes an amazing sound that can be heard from inside and outside the car. This intake could sell for a lot more than what is asked. One minor flaw is the harness that connects to the MAF does not have much slack. Other than that, I still highly recommend this product.
Brielle Knowles
Reviewed in the United States on September 15, 2017
Just received the intake today and installed it on my 2013 Audi A4 B8.5 in about 1 hour. My car is a Quattro so if it says it doesn't fit on amazon it's just because the manufacturer only put Audi A4. Very easy install. Good quality product much like a lot of AEM products. Don't sleep on this intake for an option, it performs just like the $300+ intakes do and looks better. You have the choice of installing with or without the top AEM cover. Makes a little more noise with the cover off. Intake noise isn't overly loud just gives it a little bit of sound. Not very noticeable performance gains, it's just an intake I didn't expect really anything but cool noises from the Turbo. 4 out of 5 stars just because the MAF is oriented in a way that really requires the connector wires to be stretched and just barely make it to clip in. Excellent product none the less and a cheaper alternative than most aftermarket intakes for the platform.
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