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AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
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AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake (Part Number: )
AEM Cold Air Intake
Mitsubishi Evo X 2008-2015
Read 4 Reviews | 1 Q&As
Part # 21-678C
msrp: $463.99

In stock! Ships same day

Features & Product Details

RallySport Direct is proud to provide you with another quality performance intake system brought to you by AEM.

On this page, you are looking at the AEM Cold Air Intake System designed specifically for your application to replace the factory restrictive intake system to increase both power and performance. This is a complete kit that replaces your factory air filter and air intake housing and has been dyno-proven to produce more power and torque.

Here are the details:

  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum intake pipe
  • Intake pipe will come powder-coated a black finish
  • Black powder-coated intake box shields the filter from harmful engine bay temperatures
  • Includes DryFlow filter option
  • Air filter can last up to 100,000 miles before cleaning is required
  • Air filter is washable and reusable
  • Increased horsepower
  • Improved throttle response
  • Improved torque
  • Reduced turbo lag
  • Increased intake sound
  • Includes new clamps
  • Includes all the hardware
  • Note that a tune is required to utilize the maximum performance from this intake
  • Specifications

    Brand: AEM
    Carb Exempt: Yes
    Carb E.O. Number: D-670-21
    Filter Color: Red
    Filter Element Type: Dry
    Filter Material: Cotton
    Filter Reusable: Yes
    Includes Airbox: Yes
    Piping Color: Black
    Piping Material: Aluminum
    Tuning Required: No
    Mfgr. Warranty: Limited Lifetime Warranty
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days

    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



    4 Reviews
    4.3 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    AEM Cold Air Intake ( Part Number: 21-678C)
    AEM Cold Air Intake ( Part Number: 21-678C)
    AEM Cold Air Intake Evo X  3 years ago
    3out of 5stars

    Install was a little difficult, the rubber weather stripping on the air box was a little hard to put on and it overlaps at the tips. Then the supplied rubber hoses were a little long and were causing a crimp in the hose due to tight bends. need some trimming. Next problem I had was the metal arm that comes off the aluminum intake tube does not line up to ANYTHING. Worked with it for a good 15 minutes trying to fit the intake pipes different directions. And lastly, my stock blow off valve rubs the stock strut bar. Overall I would reconsider buying this intake. And I've never had a bad experience with AEM. But as always, rallysport direct is awesome on their customer service and shipping.
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    OK.... 6 years ago
    5out of 5stars

    I bought several items for my car to include this and the COBB Inter Cooler Hard Pipes... They DO NOT line up together. The Turbo inlet hose was to long and put my BOV into my Strut Tower Bar... I trimmed an inch off bottom to get that to line up right. Then the brace on the Cobb Hard pipes still won't line up without creasing the turbo inlet hose.
    Was this review helpful?
    AEM Intake 7 years ago
    5out of 5stars

    Bought this mainly for the concealed filter & CARB sticker.Install difficulty was average for a person who can turn wrenches once in a while. The instruction manual could use some arrows to point out exactly what they are referring to but overall, I am really satisfied with how this performs. I can hear the turbo spool up & the BOV for the first time! Thanks rallysportdirect for the super fast shipping!
    Was this review helpful?
    1 of 1 people found the following review helpful
    Aem CAI Evo X 8 years ago
    4out of 5stars

    All and all a tight package. The install was more involved than most. Hate with a passion the rubber grommet material used to isolate the air box/intake module. It's not flexable and seats very poorly. I'm over it. Seat of the pant's test feels like maybe 5hp manfacture claimes 17hp.Quiet system=nice..! Two thumbs up
    Was this review helpful?


    • Q: Require a Tune?   Logan_ry3 years ago

      Does this AEM Cold AIr Intake require a tune for 2008 Evo X MR?
      • 0 of 0 people found the following answer helpful

        A:  We strongly recommend a tune anytime you are changing the intake for best performance and reliability, but AEM states this does not require a tune.

        Nick S. @ RallySport Direct 3 years ago  
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