List Price: $488.59
You Save $156.60 (32.1%)
$331.99 USD
IN STOCK
FREE GROUND SHIPPING
Part:   21-815C

AEM 21-815C Cold Air Intake

AEM Cold Air Intake System
  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Clear AEM logo also acts as a filter monitor
  • 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 21-815C fits some Audi A4, and Audi A4 Quattro models. See vehicle applications for details.
The 21-815C Performance Cold Air Intake System produces horsepower and torque gains by replacing the restrictive air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Audi A4 models. The cone shaped AEM Dryflow air filter is made of a synthetic media which requires no oil and can be used up to 100,000 miles before cleaning (depending on driving conditions). The two piece heat shield keeps hot engine air from entering the air intake system and directs cooler air using the factory inlet scoop. It has been designed to have more air capacity than the factory unit for better air flow. A clear AEM logo also doubles as a window to monitor if the filter needs servicing. The factory vacuum tube mounts directly on the intake tube. 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 21-815C vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-815C Product Specifications
Estimated Horsepower Gain11 HP @ 3300 RPM
Replacement Filter21-209DK
Air Filter ColorRed
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
Clamps Included3
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers Included1
Product StyleAEM Cold Air Intake System
Intake Pipe Color / FinishBlack
Intake Pipe MaterialNot Applicable
Street Legal In All US States No
TUV Approved (Europe)No
Weight13 lb (5.9 kg)
Product Box Height11.63 in (295 mm)
Product Box Length24.38 in (619 mm)
Product Box Width12.25 in (311 mm)
California RestrictedNot legal for sale or use in California
Mounting Hardware IncludedYes

Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive harm--www.P65warnings.ca.gov