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AEM Induction Part # AEM21-817C

AEM 2017 C.A.S Hyundai Elantra L4-1.6L F/I Cold Air Intake - 21-817C

$349.99 USD

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The AEM 21-817C 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 Hyundai Elantra Sport models. The oversized cone-shaped AEM Dry Flow filter is made from an oil-free, synthetic filter media and can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). This system puts the air filter low and towards the front of the car where cooler air can be found. The cooler and denser air is then channeled through the mandrel-bent aluminum intake tube into the throttle body. The factory PCV and vent hoses mount directly on the intake tube using the existing spring clamps. The air intake system 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 21-817C vehicle applications to determine the legal status for each vehicle.
Installation Instructions
User 1

  • Creates a deeper, more aggressive induction tone that highlights the intake system’s improved airflow.
  • Equipped with a long-life, high-capacity air filter capable of up to 100,000 miles before servicing (depending on driving conditions), reducing maintenance while maintaining strong, clean airflow.
  • Features low-restriction intake tubing that increases air velocity and high-volume airflow for maximum performance gains.
  • Precision-tuned and dyno-validated to enhance throttle response, sharpen acceleration, and improve overall engine efficiency, helping maximize horsepower and drivability.
  • Utilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.

  • Couplers Included: 1
  • Coupler Color/Finish: Black
  • Intake Pipe Color / Finish: Gunmetal Gray
  • Clamp Color/Finish: Natural
  • Air Filter Material: Non-woven Synthetic
  • Air Filter Color: Red
  • Clamp Style: Regular
  • Air Filter Outlet Shape: Round
  • Clamp Material: Stainless Steel
  • Air Filter Washable: Yes
  • Mounting Hardware Included: Yes
  • Estimated Horsepower Gain: 11 HP @ 5400 RPM
  • Replacement Filter: 21-2157DK
  • Clamps Included: 3
  • Weight: 9.5 lb (4.3 kg)
  • Intake Pipe Ports: All intake tube ports needed for the specified applications are included

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Free U.S. standard shipping on qualifying orders $199+

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