aFe Momentum HD Pro DRY S Cold Air Intake System 51-74002 for 2004.5-2005 GM 6.6L Duramax LLY

Bringing you the next generation of intakes, the Momentum HD sealed air intake system is designed using the most up-to-date engineering tools and techniques to provide you with the perfect blend of power and protection. This intake system is superior in every way. From the one-piece sealed housing to the massive Pro DRY S air filter and premium hardware, we spared no expense to give you the best intake on the market. Momentum HD Cold Air Intake System w/ Pro DRY S Filter GM Diesel Trucks 04.5-05 V8-6.6L (td) LLY

• Stainless Steel Plate Is Used For An Aggressive Style
• Unique Housing To Filter Interface-Patent Pending
• Huge 6 in. Flange w/Inverted Top Air Filter
• 3 Layer Cotton Gauze Synthetic Media
• Auxiliary Air Scoop w/Urethane Plug
• Washable And Reusable Air Filter
• Stainless Steel T-Bolt Clamp
• Reinforced Silicone Coupler
• Hassle-Free Installation
• Pro DRY S Filter Media

The aFe Momentum HD Pro DRY S Cold Air Intake System is engineered for 2004.5-2005 GM diesel trucks equipped with the 6.6L Duramax LLY V8 engine. Part number 51-74002 combines a sealed one-piece airbox, high-flow intake design, and reusable Pro DRY S filter media to help improve airflow while providing added protection from engine-bay heat and airborne debris. The system is designed to deliver a practical balance of performance, filtration, and durability for street, work, and towing applications.

A large six-inch intake flange with an inverted-top air filter supports increased air volume, while the three-layer cotton gauze and synthetic media provide efficient filtration without requiring filter oil. The washable and reusable filter helps reduce long-term maintenance costs and simplifies service. An auxiliary air scoop with a urethane plug allows flexible installation options, and the unique housing-to-filter interface helps create a secure, well-sealed connection.

Built for demanding diesel use, the Momentum HD system features a stainless steel plate for a durable, aggressive appearance, stainless steel T-bolt clamps, a reinforced silicone coupler, and premium hardware. Installation is designed to be hassle-free using the vehicle’s existing mounting locations and basic hand tools. The aFe 51-74002 is EPA compliant and carries CARB Executive Order D-550-18; verify local emissions requirements before installation. Fitment includes select 2004 Chevrolet Silverado 2500 HD and 3500 models, as well as select 2005-2006 Silverado 2500 HD models with the 6.6L Duramax LLY engine. Confirm vehicle application before ordering.

What’s Included

• Sealed Momentum HD intake housing
• Pro DRY S washable and reusable air filter
• Auxiliary air scoop with urethane plug
• Reinforced silicone coupler
• Stainless steel T-bolt clamp and installation hardware
• Installation components and instructions

Features:

• Sealed One-Piece Housing: Helps isolate the filter from hot engine-bay air for more consistent intake temperatures.
• Pro DRY S Filter Media: Three-layer cotton gauze and synthetic media provide high-flow filtration without filter oil.
• High-Flow Intake Design: Large six-inch flange and inverted-top filter support increased airflow to the 6.6L Duramax LLY engine.
• Durable Installation Hardware: Stainless steel plate, T-bolt clamp, reinforced silicone coupler, and premium components provide long-term durability.

Fitments:
2004 Chevrolet Silverado 2500 HD Base
2004 Chevrolet Silverado 3500 Base
2004 Chevrolet Silverado 3500 LS
2004 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2004 GMC Sierra 2500 HD Base
2004 GMC Sierra 2500 HD SLE
2004 GMC Sierra 2500 HD SLT
2004 GMC Sierra 2500 HD WT
2004 GMC Sierra 3500 Base
2004 GMC Sierra 3500 SLE
2004 GMC Sierra 3500 SLT
2004 GMC Sierra 3500 WT
2005 Chevrolet Silverado 2500 HD Base
2005 Chevrolet Silverado 2500 HD LS
2005 Chevrolet Silverado 2500 HD LT
2005 Chevrolet Silverado 3500 Base
2005 Chevrolet Silverado 3500 LS
2005 Chevrolet Silverado 3500 LT
2005 GMC Sierra 2500 HD Base
2005 GMC Sierra 2500 HD SLE
2005 GMC Sierra 2500 HD SLT
2005 GMC Sierra 2500 HD WT
2005 GMC Sierra 3500 Base
2005 GMC Sierra 3500 SLE
2005 GMC Sierra 3500 SLT
2005 GMC Sierra 3500 WT
2006 Chevrolet Silverado 2500 HD LS
2006 Chevrolet Silverado 2500 HD LT
2006 Chevrolet Silverado 2500 HD WT
2006 Chevrolet Silverado 3500 LS
2006 Chevrolet Silverado 3500 LT
2006 Chevrolet Silverado 3500 WT
2006 GMC Sierra 2500 HD SL
2006 GMC Sierra 2500 HD SLE
2006 GMC Sierra 2500 HD SLT
2006 GMC Sierra 2500 HD WT
2006 GMC Sierra 3500 SL
2006 GMC Sierra 3500 SLE
2006 GMC Sierra 3500 SLT
2006 GMC Sierra 3500 WT

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-550-18
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1