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AEM Cold Air Intake for '08-'14 Evo X (AEM21-678C)

Sale price $349.99 Regular price $399.99

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The AEM 21-678C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. The air filter is located in the original air box space and is protected by a replacement air box which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from aluminum featuring a durable gunmetal gray powder coated finish. The air intake system is backed by AEM's Lifetime Limited Warranty. 

  • Increased horsepower (Estimated 17 HP @ 4100 RPM)
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum tubing
  • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
  • Washable and reusable oil-free filter media
  • AEM Lifetime Limited Warranty
  • Replacement Filter: 21-203DK

Installation Instructions

Replacement Filter 21-203DK