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Part:   21-8123DC

AEM 21-8123DC Cold Air Intake

AEM Cold Air Intake System
  • 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

The AEM 21-8123DC fits some Ford Mustang models. See vehicle applications for details.
The AEM 21-8123DC 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 Ford Mustang 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 replacement AEM airbox with a logo embossed aluminum lid 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, crankcase vent hose, brake booster line as well as a replacement AEM filter minder. The oval cone 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 easy to install with commonly available tools. 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 21-8123DC vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-8123DC Product Specifications
Estimated Horsepower Gain6.0 HP @ 3500 RPM
Air Filter ColorRed
Air Filter Height5.5 in (140 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 Included5
ColorGunmetal Gray
Intake Pipe Color / FinishGunmetal Gray
Intake Pipe MaterialAluminum
Product Box Height12.75 in (324 mm)
Product Box Length24.5 in (622 mm)
Product Box Width20.5 in (521 mm)
Product StyleAEM Cold Air Intake System
Replacement Filter21-2145DK
Street Legal In All US States No
TUV Approved (Europe)No
Weight12.1 lb (5.5 kg)

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