Description
Upgrade your 6.6L Duramax diesel with the K&N NextGen Dry Flow Cold Air Intake System, engineered to increase airflow, horsepower, and torque without requiring a tune. Designed specifically for GM heavy-duty trucks, this system improves engine efficiency, throttle response, and overall performance for both daily driving and demanding workloads.
The system features a high-density polyethylene (HDPE) rotationally molded intake tube that increases airflow volume and optimizes air delivery to your engine. This improved airflow translates into stronger acceleration, enhanced turbo response, and more consistent power under load.
A custom NextGen airbox with a semi-enclosed design helps shield incoming air from engine bay heat while directing cooler, denser air into the intake. The enlarged fresh air inlet further improves airflow efficiency, making this system ideal for towing, hauling, and heavy-duty applications.
At the core of the system is an oversized Dryflow® Lifetime Air Filter featuring oil-free synthetic media. Its conical, high-capacity design allows extended service intervals of up to 50,000 miles under normal highway driving conditions. The simple two-step cleaning process eliminates the need for oil, making maintenance quick and convenient while still delivering up to 99% filtration efficiency.
Dyno-proven performance gains of up to 20.5 horsepower and 35.4 lb-ft of torque ensure noticeable improvements even on a stock tune. The intake system also enhances turbo sound and induction tone while maintaining a quiet, drone-free cruising experience.
The large-diameter, CAD-designed intake tube incorporates strategically placed air channels that increase airflow velocity and volume, delivering more air to the engine for improved combustion and performance.
Finished in a sleek all-black design, this intake system enhances your engine bay with a clean, aggressive look while maintaining durability and reliability in harsh diesel environments. Installation is straightforward and can typically be completed in under 60 minutes using basic tools.
Upgrade your Duramax with a high-performance intake system that delivers proven power gains, improved airflow efficiency, and long-lasting reliability for every drive.
Key Features
- Dyno-proven gains of up to 20.5 HP and 35.4 lb-ft of torque
- Increased airflow with HDPE rotationally molded intake tube
- Improved towing and heavy-load performance
- NextGen semi-enclosed airbox for cooler intake temperatures
- Enlarged air inlet for better airflow efficiency
- Oversized Dryflow® reusable air filter with up to 99% efficiency
- Quick-Lock™ installation system with minimal hardware
- Up to 50,000 miles between filter services under normal conditions
- No-oil filter design for fast and easy maintenance
- Installs in less than 60 minutes
- Durable construction for harsh diesel environments
- Aggressive blacked-out engine bay styling
Specifications
- Estimated Horsepower Gain: 20.5 HP @ 2400 RPM
- Estimated Torque Gain: 35.4 lb-ft @ 2250 RPM
- Intake CFM Gain: 44.2
- Air Filter Color: Black
- Air Filter Material: Non-woven Synthetic
- Air Filter Outlet Shape: Round
- Replacement Filter: RU-3139HBK
- Intake Pipe Material: High-Density Cross-Linked Polyethylene
- Intake Pipe Finish: Black
- Clamps Included: 3
- Clamp Material: Stainless Steel
- Clamp Style: Worm Gear
- Couplers Included: 2
- Mounting Hardware Included: Yes
- Product Style: 50 Series GEN3
- Weight: 13 lbs (5.9 kg)
- Box Dimensions: 24.2 in L x 20.2 in W x 15.6 in H
Fitment
2019 Chevrolet Silverado 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2019 Chevrolet Silverado 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2019 GMC Sierra 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2019 GMC Sierra 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2018 Chevrolet Silverado 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2018 Chevrolet Silverado 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2018 GMC Sierra 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2018 GMC Sierra 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2017 Chevrolet Silverado 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2017 Chevrolet Silverado 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2017 GMC Sierra 2500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
2017 GMC Sierra 3500 HD 6.6L V8 Diesel
All Models
Street Legal in All US States: No
Important Notes
- Not legal for sale or use in California on pollution-controlled vehicles
- Not CARB compliant
- Intended for off-road or competition use where applicable
