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Part:   21-8000DC

AEM 21-8000DC Brute Force Intake

AEM Brute Force 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 21-681C 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 Audi A4 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 which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine’s factory emissions control devices including the mass air flow sensor. The 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 21-681C vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-8000DC Product Specifications
Estimated Horsepower Gain12.25 HP @ 4796 RPM
Air Filter ColorRed
Air Filter Height8.125 in (206 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
CARB EO NumberD-670-15
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included5
Intake Pipe Color / FinishGunmetal Gray
Intake Pipe MaterialAluminum
Power Spacer includedNo
Product Box Height14.94 in (379 mm)
Product Box Length22.2 in (564 mm)
Product Box Width14.5 in (368 mm)
Product StyleAEM Brute Force Intake System
Replacement Filter21-2100DK
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight11 lb (5 kg)

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

Cory Smith from Omaha, Nebraska
April 1, 2016 - Part 21-8000DC
2002 GMC Yukon. Looks great. Easy install. Simple step-by-step instructions. Minor improvement to exhaust note through full 3 system. Improvement to low rpm throttle response. Too early to tell if any mpg gains.
Chad Black from Hanford, California
March 14, 2016 - Part 21-8000DC
Great product, Thanks.
Matthew Aldridge from Porter Ranch, California
July 3, 2015 - Part 21-8000DC
Major difference from the stock air filter system to the AEM intake system. So much more power. Awesome sound. Very satisfied.
Willis from Texas
July 28, 2014 - Part 21-8000DC
Easy to follow instructions and installed quickly. Truck runs and sounds great. I really like that the filter requires no oil.
James Hendrick from North Dakota
April 21, 2014 - Part 21-8000DC
Everything and more. Noticeable performance, and amazing sound.