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Part:   21-781DS

AEM 21-781DS Cold Air Intake

AEM Cold Air Intake System
  • Increased horsepower and torque
  • Tuned and dyno-tested to improve acceleration and engine sound
  • 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 21-781DS 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 Mercedes Benz CLA250 models. Air enters the system from the factory fresh air inlets, through replacement air ducts and into a roto-molded, aerodynamic AEM air box containing an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. This air intake system was developed to accommodate the engine’s factory emissions control devices including the ECU. The tapered 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 easy to install with commonly available tools and it 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 21-781DS vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-781DS Product Specifications
Estimated Horsepower Gain10 HP @ 3300 RPM
Air Filter ColorRed
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialNo Clamps Required
Clamp StyleNo Clamps Required
Clamps IncludedNo Clamps Included
Intake Pipe Color / FinishNone
Intake Pipe MaterialNo Tube
Product Box Height9.81 in (249 mm)
Product Box Length36.31 in (922 mm)
Product Box Width22.81 in (579 mm)
Product StyleAEM Cold Air Intake System
Replacement Filter21-1015DK
Street Legal In All US States No
TUV Approved (Europe)No
Weight12.6 lb (5.7 kg)

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