Cheapest AEM 21-521R Red Cold Air Intake System

AEM 21-521R Red Cold Air Intake SystemBuy AEM 21-521R Red Cold Air Intake System

AEM 21-521R Red Cold Air Intake System Product Description:



  • AEM's lifetime DRYFLOW Synthetic air filter is up to 99.52% efficient in FINE DUST testing, filters dirt as small as one micron, and never needs filter oil!
  • Engineered to produce maximum horsepower and torque
  • Manufactured and assembled in the USA
  • 50-state legal or pending legality - Excluding intake systems that are designated as Off-Road Use Only.
  • Guaranteed for life

Product Description

AEM pioneered the Cold Air induction system for sport compact cars in 1994. A Cold Air intake system relocates the filter outside of the engine compartment to deliver the coolest air inlet temperatures possible. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horsepower and torque. But that's only part of the power equation. Tuning the inlet pipe in length and diameter to match the engine's resonance helps move more air to the cylinders (think of your engine as a big air pump), and this tuning allows us to deliver the maximum power gains throughout the entire RPM range. We also monitor fuel trim correction factors and all OBDII sensors during R&D to eliminate leaning the engine out and/or throwing a check engine light. Our Cold Air systems are dyno-proven and tested against the competition with the goal of creating more useable power than any other system of their kind. Every AEM Cold Air induction system features the highest standards of construction and we are so confident in their fit and performance that we guarantee them for the life of your vehicle. All AEM Cold Air systems are either 50-state legal or pending (excluding "Off Road" and "Hybrid" systems), include a lifetime DRYFLOW Synthetic air filter and come with a limited lifetime warranty.

Customer Reviews

Most helpful customer reviews

0 of 0 people found the following review helpful.
5Amazing Product, Does exactly what AEM says it will!
By J. Hall
Let me preface by saying I am not a knowledgeable car guy. I bought this at the insistance of my buddy who is. I have seen a noted increase in MPG as well as my car running with a little more UMPH. I love this add-on and it only took me an hour to install. An hour install for a non-car guy is pretty good. I would highly recommend this intake and the brand AEM as they sell a great product! Came very well packaged and the powdercoat finish looks amazing. Makes the engine look very tough!

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