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AEM Cold Air Intake System - 21-577C

Cold Air Intake System
  • $303.99
  • Free Shipping
  • Ships By 12/17
  • What Do You Drive?


  • Color:
    Gun Metal Gray
  • Part #:

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AEM Cold Air Intake System Part #21-577C Customer Reviews

Average Rating

4 Customer Reviews

Get this intake right now!

Reviewed by Joseph H (WOODBRIDGE, NJ) Reviewed for a 2008 Scion xB — Apr 21, 2015 9:09 PM

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AEM has made this one of the best aftermaehet products you can buy. The instructions are super clear, the appearance is amazing and the performance upgrade will leave you wondering why you did not purchase this earlier. If you want an amazing sounding intake that is easy to install and makes everyone in your toaster do a double take....this is the intake you need to buy!


Reviewed by Corey H (Hillsboro, WI) Reviewed for a 2011 Scion xB — Oct 27, 2010 11:20 PM

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2 of 3 people found the following review helpful.

Awesome product. Really opened my engine up. Easy install.

AEM cold air intake install on a 2008 Scion Xb

Reviewed by CINDY s (Getzville, NY) Reviewed for a 2008 Scion xB — Sep 14, 2008 11:18 AM

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12 of 12 people found the following review helpful.

Part took about two weeks to arrive.Install took about 90 minutes.Directions were precise and had step by step pictues.Fit was perfect,except AEM logo is barely visible with pipe installed properly. Only difficult part of job was that filter has to be slipped through wheelwell then installed from above.Immediately after install there was a noticable improvement in torque.Also engine sound is much more "throaty" especially above 3500 rpms. Since I disconnected battery to do job, my mileage computer reset. My avg. mpg is up to 25 and climbing. I averaged 27mpg prior to the install. I'm hoping to get 29 mpg average with the new intake but the car sounds so good it's hard to keep my foot off the pedal.Overall it was an easy,inexpensive mod with a large impact on performance.

08 Scion xB CAI

Reviewed by wayne w (Mount Laurel, NJ) Reviewed for a 2008 Scion xD — Sep 21, 2007 3:06 PM

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WOW... This is the first CAI I've purchased and I must say that AEM makes the best products for any car. The throttle response, improved mileage, ease of installation, fit, function and sound are incredible. If you're looking for a CAI, AEM has what you need!!!