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Part:   21-733C

AEM 21-733C Cold Air Intake

AEM Cold Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.5
  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum tubing
  • Easy to install using commonly available tools
  • 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

AEM Cold Air Intake Systems are designed to produce horsepower and torque gains. They replace the restrictive factory airbox and air filter to give you better performance and better engine sound. AEM cold air intakes relocate the air filter outside the engine compartment so cooler air can be fed into your engine. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber for more horsepower and torque. AEM Cold Air Intakes include an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration, and performance while allowing easy oil-free cleaning. They include a mandrel-bent aluminum intake tube and high quality hardware designed to reduce restriction and reduce intake temperature. The design and components of each intake system vary so consult the installation instructions for more information on the contents of each part number. This Air Intake cannot be sold in California. It is not legal for use in California or other states adopting California emission standards.

[More Info on AEM Cold Air Intakes and Performance Air Intake Systems]
Specifications AEM 21-733C Product Specifications
Estimated Horsepower Gain7 HP @ 4200 RPM
Air Filter ColorRed
Air Filter Height5 in (127 mm)
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included3
Intake Pipe Color / FinishGunmetal Gray
Intake Pipe MaterialAluminum
Product Box Height12.25 in (311 mm)
Product Box Length20.25 in (514 mm)
Product Box Width12.25 in (311 mm)
Product StyleAEM Cold Air Intake System
Replacement Filter21-203DOSK
Street Legal In All US States No
TUV Approved (Europe)No
Weight7.2 lb (3.3 kg)

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

John Canady from Hopewell, Virginia
June 13, 2016 - Part 21-733C
Fit great, no problems installing, recommend for your 2013 2.5LT Jetta if your looking.
James Watson from Millville, Massachusetts
June 11, 2016 - Part 21-733C
Highly recommend this product. It's not something you'll notice driving around town. But once you get into ~3000 rpm and higher, the noise it makes is really throaty and definitely adds character to your car. On higher acceleration it definitely feels as if my car is more ambitious and a little quicker on its feet. Only gave it 4 stars because sometimes I get a really throaty noise and other times it's on the quiet side. Not sure what's causing the inconsistency, but wish I got the throaty noise all the time.