aFe 51-74006-1 Momentum HD Intake for 11-16 Chevy/GMC 6.6L Duramax LML

Vehicle Fitment

• 2011-2016 Chevrolet Silverado 2500 HD (6.6L Duramax V8 Turbo Diesel, LML)
• 2011-2016 Chevrolet Silverado 3500 HD (6.6L Duramax V8 Turbo Diesel, LML)
• 2011-2016 GMC Sierra 2500 HD (6.6L Duramax V8 Turbo Diesel, LML)
• 2011-2016 GMC Sierra 3500 HD (6.6L Duramax V8 Turbo Diesel, LML)

Features

• Momentum HD sealed cold air intake designed specifically for LML Duramax engines
• Massive 360° Pro DRY S dry synthetic performance air filter for high airflow
• One-piece sealed housing with auxiliary air scoop for cooler intake charge
• Clear sight window for quick visual filter inspection without removal
• CAD-designed, dyno-tuned roto-molded intake tube for optimized flow
• Premium stainless steel T-bolt clamps and reinforced silicone coupler
• Outflows factory intake by up to ~52% for improved engine breathing
• Direct fit - no cutting, drilling, or permanent modification required

Specifications

• Brand: aFe POWER
• Part Number: 51-74006-1
• Series: Momentum HD Cold Air Intake
• Engine Compatibility: 6.6L Duramax V8 Turbo Diesel (LML)
• Filter Type: Pro DRY S 3-layer dry synthetic media (washable/reusable)
• Airflow Increase: Up to ~52% over factory intake
• Estimated Gains: Up to +22 HP and +57 lb-ft torque
• Housing: One-piece sealed design with auxiliary inlet

Included Components

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

Product Description

The aFe POWER 51-74006-1 Momentum HD Cold Air Intake System is a high-performance airflow upgrade for 2011-2016 Chevrolet Silverado and GMC Sierra heavy-duty trucks equipped with the 6.6L Duramax LML turbo diesel engine. Built around a large Pro DRY S synthetic dry air filter and a sealed one-piece housing with an auxiliary air scoop, this intake delivers significantly more airflow compared to the restrictive stock system - increasing airflow up to approximately 52%, which supports measurable improvements in throttle response and overall engine performance.

Featuring a CAD-designed, dyno-tuned roto-molded intake tube and premium hardware, the Momentum HD system is engineered for durability and precise fitment. The included Pro DRY S filter offers high filtration efficiency while remaining washable and reusable for long-term use. Installation is straightforward with the direct bolt-on design requiring no cutting or drilling, making it an ideal upgrade for Duramax owners seeking improved horsepower, torque, and airflow in daily driving, towing, or heavy-duty applications.