AEM Brute Force HD Intake System

04 - 05 6.6L Chevrolet Silverado | GMC Sierra

by AEM
SKU NWD-21-9022DC

21-9022DC | 21-9022DP

  • 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
  • Features
  • Videos
  • Instructions
  • Vehicle Fitment

The AEM Brute Force HD Diesel Air Intake System produces horsepower and torque gains for diesel engines by replacing the vehicle’s restrictive factory air filter and air intake housing.

Air enters the system through an extra-large AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box with a replacement AEM embossed lid which is designed to protect the filter from engine bay heat and increase horsepower.

The intake tubing is an aerodynamically engineered and highly durable polyethylene tube. This air intake system was developed to accommodate the engine’s factory emissions control devices including the mass air flow sensor. The oval 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.


Estimated Horsepower Gain: 10.02 HP @ 2950 RPM

Replacement Filter: 21-2259DK

Air Filter Color: Red

Air Filter Material: Non-woven Synthetic

Air Filter Outlet Shape: Round

Clamps Included: 5

Clamp Material: Steel

Clamp Style: Regular

Couplers Included: None

Product Style: AEM Brute Force HD Intake

Air Filter Height: 9 in (229 mm)

Intake Pipe Color / Finish: Gunmetal Gray or Polished

Intake Pipe Material: Aluminum

CARB EO Number: D-670-15

Street Legal In All US States: Yes

TUV Approved (Europe): No

Weight: 13.2 lb (6 kg)

Product Box Height: 14.94 in (379 mm)

Product Box Length: 22.2 in (564 mm)

Product Box Width: 14.5 in (368 mm)

Mounting Hardware Included: Yes

Year Make Engine


CHEVROLET Silverado 2500 HD

CHEVROLET Silverado 3500



GMC Sierra 2500 HD

GMC Sierra 3500