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AEM Induction

AEM IND Brute Force Air Intake

$419.99

SKU: 21-8000DC · Air Induction

Product Details

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.

  • Utilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.
  • AEM Lifetime Limited Warranty

Vehicle Fitment 65 applications

Cadillac (4)

  • 2002–2006 Escalade EXT 6.0L V8 (Gen III LS)
  • 2002–2005 Escalade 5.3L V8 (Gen III LS)
  • 2002–2006 Escalade 6.0L V8 (Gen III LS)
  • 2003–2006 Escalade ESV 6.0L V8 (Gen III LS)

Chevrolet (29)

  • 1999–2006 Silverado 1500 4.3L Vortec V6
  • 1999–2006 Silverado 1500 4.8L V8 (Gen III LS)
  • 1999–2006 Silverado 1500 5.3L V8 (Gen III LS)
  • 1999–2000 Silverado 2500 5.3L V8 (Gen III LS)
  • 1999–2004 Silverado 2500 6.0L V8 (Gen III LS)
  • 2000–2006 Suburban 1500 5.3L V8 (Gen III LS)
  • 2000–2006 Suburban 2500 6.0L V8 (Gen III LS)
  • 2000–2006 Tahoe 4.8L V8 (Gen III LS)
  • 2000–2006 Tahoe 5.3L V8 (Gen III LS)
  • 2001–2003 Silverado 1500 HD 6.0L V8 (Gen III LS)
  • 2001–2006 Silverado 2500 HD 6.0L V8 (Gen III LS)
  • 2001–2006 Silverado 2500 HD 6.6L Duramax Diesel
  • 2001–2006 Silverado 2500 HD 8.1L Vortec V8
  • 2001–2006 Silverado 3500 6.0L V8 (Gen III LS)
  • 2001–2006 Silverado 3500 6.6L Duramax Diesel
  • 2001–2006 Silverado 3500 8.1L Vortec V8
  • 2001–2006 Suburban 2500 8.1L Vortec V8
  • 2002–2006 Avalanche 1500 5.3L V8 (Gen III LS)
  • 2003–2006 Silverado 1500 6.0L V8 (Gen III LS)
  • 2005–2006 Silverado 1500 HD 6.0L V8 (Gen III LS)
  • 2006 Suburban 1500 6.0L V8 (Gen III LS)
  • 2007 Silverado 1500 Classic 4.3L Vortec V6
  • 2007 Silverado 1500 Classic 4.8L V8 (Gen IV LS)
  • 2007 Silverado 1500 Classic 5.3L V8 (Gen III LS)
  • 2007 Silverado 1500 Classic 6.0L V8 (Gen III LS)
  • 2007 Silverado 1500 HD Classic 6.0L V8 (Gen III LS)
  • 2007 Silverado 2500 HD Classic 6.0L V8 (Gen III LS)
  • 2007 Silverado 2500 HD Classic 6.6L Duramax Diesel
  • 2007 Silverado 2500 HD Classic 8.1L Vortec V8

GMC (32)

  • 1999–2006 Sierra 1500 4.3L Vortec V6
  • 1999–2006 Sierra 1500 4.8L V8 (Gen III LS)
  • 1999–2006 Sierra 1500 5.3L V8 (Gen III LS)
  • 1999–2000 Sierra 2500 5.3L V8 (Gen III LS)
  • 1999–2004 Sierra 2500 6.0L V8 (Gen III LS)
  • 2000–2006 Yukon XL 2500 6.0L V8 (Gen III LS)
  • 2000–2006 Yukon 4.8L V8 (Gen III LS)
  • 2000–2006 Yukon 5.3L V8 (Gen III LS)
  • 2001–2003 Sierra 1500 HD 6.0L V8 (Gen III LS)
  • 2001–2006 Sierra 1500 6.0L V8 (Gen III LS)
  • 2001–2006 Sierra 2500 HD 6.0L V8 (Gen III LS)
  • 2001–2006 Sierra 2500 HD 6.6L Duramax Diesel
  • 2001–2006 Sierra 2500 HD 8.1L Vortec V8
  • 2001–2006 Sierra 3500 6.0L V8 (Gen III LS)
  • 2001–2006 Sierra 3500 6.6L Duramax Diesel
  • 2001–2006 Sierra 3500 8.1L Vortec V8
  • 2001–2006 Yukon XL 1500 6.0L V8 (Gen III LS)
  • 2001–2006 Yukon XL 2500 8.1L Vortec V8
  • 2001–2006 Yukon 6.0L V8 (Gen III LS)
  • 2002–2006 Yukon XL 1500 5.3L V8 (Gen III LS)
  • 2005–2006 Sierra 1500 HD 6.0L V8 (Gen III LS)
  • 2007 Sierra 1500 Classic 4.3L Vortec V6
  • 2007 Sierra 1500 Classic 4.8L V8 (Gen IV LS)
  • 2007 Sierra 1500 Classic 5.3L V8 (Gen III LS)
  • 2007 Sierra 1500 Classic 6.0L V8 (Gen III LS)
  • 2007 Sierra 1500 HD Classic 6.0L V8 (Gen III LS)
  • 2007 Sierra 2500 HD Classic 6.0L V8 (Gen III LS)
  • 2007 Sierra 2500 HD Classic 6.6L Duramax Diesel
  • 2007 Sierra 2500 HD Classic 8.1L Vortec V8
  • 2007 Sierra 3500 Classic 6.0L V8 (Gen III LS)
  • 2007 Sierra 3500 Classic 6.6L Duramax Diesel
  • 2007 Sierra 3500 Classic 8.1L Vortec V8