aFe 51-74003 Momentum HD Cold Air Intake for 06-07 Chevy/GMC 6.6L Duramax

Vehicle Fitment

• 2006-2007 Chevrolet Silverado 2500 HD (6.6L Duramax V8 Turbo Diesel)
• 2006-2007 Chevrolet Silverado 3500 (6.6L Duramax V8 Turbo Diesel)
• 2006-2007 GMC Sierra 2500 HD (6.6L Duramax V8 Turbo Diesel)
• 2006-2007 GMC Sierra 3500 (6.6L Duramax V8 Turbo Diesel)

Features

• Momentum HD sealed cold air intake engineered for GM Duramax diesel performance
• Massive 360° Pro DRY S high-flow synthetic dry air filter media
• One-piece sealed housing with auxiliary air scoop for cooler intake air
• Clear sight window allows easy visual filter inspection without disassembly
• CAD-designed, dyno-tuned roto-molded intake tube for optimized airflow
• Premium stainless steel T-bolt clamps and reinforced silicone couplers
• Outflows stock intake by approximately 57% for stronger engine breathing
• Direct bolt-on installation with no cutting or drilling required

Specifications

• Brand: aFe POWER
• Part Number: 51-74003
• Series: Momentum HD Cold Air Intake
• Engine Compatibility: 6.6L Duramax V8 Turbo Diesel (LLY/LBZ)
• Filter Type: Pro DRY S synthetic dry media (washable and reusable)
• Airflow Increase: ~57% more than factory intake
• Estimated Gains: Up to +21 HP and +56 lb-ft torque
• Housing: One-piece sealed roto-molded design

Included Components

• 1x Sealed Momentum HD intake housing with auxiliary air scoop
• 1x Roto-molded high-flow intake tube
• 1x Pro DRY S performance air filter
• 2x Stainless steel T-bolt clamps
• 1x Reinforced silicone coupling
• All required mounting hardware

Product Description

The aFe POWER 51-74003 Momentum HD Cold Air Intake System is a performance-oriented upgrade for 2006-2007 Chevrolet Silverado and GMC Sierra heavy-duty trucks equipped with the 6.6L Duramax turbo diesel (LLY/LBZ). Designed around a large Pro DRY S synthetic dry air filter and a sealed one-piece housing with auxiliary air scoop, this intake significantly increases airflow - up to ~57% over the restrictive factory intake - resulting in improved engine breathing, throttle response, and power output with gains up to approximately +21 horsepower and +56 lb-ft of torque.

Featuring a CAD-designed, roto-molded intake tube and premium stainless hardware, the Momentum HD intake ensures durable construction and precise fitment. The clear sight window allows quick filter inspection without disassembly, while the included hardware delivers a secure, direct bolt-on installation with no cutting or drilling required. This intake upgrade is ideal for Duramax owners seeking a reliable performance boost and enhanced airflow for towing, hauling, or daily driving.