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Part:   21-728P

AEM 21-728P Cold Air Intake

AEM Cold Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0
  • Increased horsepower
  • 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

The AEM 21-728P 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 Genesis Coupe models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield with a replacement air scoop adapter which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable chrome-like finish. This air intake system was developed to accommodate the engine’s factory emissions control devices including the mass air flow sensor. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). 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 21-728P vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-728P Product Specifications
Estimated Horsepower Gain12 HP @ 2800 RPM
Air Filter ColorRed
Air Filter Height7 in (178 mm)
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
CARB EO NumberD-670-21
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included5
Couplers Included1
Intake Pipe Color / FinishPolished
Intake Pipe MaterialAluminum
Product Box Height14.94 in (379 mm)
Product Box Length22.2 in (564 mm)
Product Box Width14.5 in (368 mm)
Product StyleAEM Cold Air Intake System
Replacement Filter21-2047DK
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight11.8 lb (5.3 kg)

Horsepower gains based on similar vehicle dynamometer test. Results will vary.
Reviews Product Reviews

Jeff Hall from Florida
January 26, 2015 - Part 21-728P
The directions were easy. It would have been nice if they were printed in color. I took my time and had fun with it. I sprayed a little WD-40 on the fittings so the rubber hoses would slip on easily. The clamps were difficult to get to because everything is tight around that area. The stock turbo spools up much faster. Also, at low RPM's it makes a low swirling sound, but when I mash on the accelerator it makes a loud SWURSH!!! I feel like my Forge BOV (stock location) makes a louder discharge sound too! I can't wait to get my cat-back exhaust next...
Brendon Blais from Groton, Connecticut
May 18, 2014 - Part 21-728P
This intake fits well on my 2013 Genesis. All the parts are very close to other components and there isn't much space to work with, but AEM did a great job on design. It took a little adjustment to get everything in there just right, but the overall install time was less than an hour. I felt a very noticeable power increase in the low end of the rpm range, basically the turbo hits harder now. There is also a great intake sound while the turbo is spooled, and a nice blowoff sound from the stock recirc valve. There is no noticable sound increase while driving lightly around town. Overall, this is a very good quality intake.