NEXTGEN DIESEL DRYFLOW COLD AIR INTAKE - RAM 2500/3500; L6-6.7L Engine Cold Air Intake Performance Kit K&N #KNN50-1583D

K&N NextGen Diesel Dryflow cold air intake systems feature a high-density polyethylene (HDPE) rotationally molded tube designed to help increase the volume of airflow to your engine and provide an increase in horsepower and torque with no tune required. This intake system is paired with a washable, reusable Dryflow LIFETIME Air Filter featuring an oil-free synthetic media. The oversized, conical design allows you to go up to 50,000 miles between filter services under normal highway driving conditions and has an easy oil-free two step cleaning process for convenience. A custom designed NextGen air box helps protect air intake from the high temperature of your engine bay, and the entire system can typically be installed in less than 60 minutes.

Engineered for Convenience: NextGen Dryflow® synthetic media delivers up to 99% filtration efficiency and features an easy, two-step cleaning process that requires no oil, making maintenance more convenient.

Improved Towing Power: Engineered to deliver more torque for hauling, towing, and heavy-load performance.

NextGen Airbox: The hybrid airbox features a semi-enclosed airbox that helps lower air temperatures, an enlarged fresh air inlet for improved airflow, and better protection against harsh diesel environments.

Oversized Dryflow® Filter: Features a radius-entry inlet to increase airflow and performance. NextGen filters also feature Quick-Lock™ technology for fast, secure installation with minimal hardware sealing in place with just one hose clamp.

Large-Diameter Tube: The large-diameter, CAD-designed intake tube features strategically positioned air channels that increase airflow, boosting air speed and delivering more air to your engine for added performance.

Precision Engineering: Each NextGen Dryflow® diesel intake is precisely engineered for your vehicle, enhancing the style of your engine bay while providing exceptional filtration without sacrificing performance.

Sinister Aesthetic: The all-black design delivers a sleek, stealthy presence with an aggressive black-on-black finish that complements any build and looks just as powerful as it performs.


  • Intake CFM Gain 30
  • Product Style 50 Series GEN3
  • Weight 15 lb (6.8 kg)
  • Air Filter Outlet Shape Round
  • Air Filter Color Black
  • Air Filter Material Non-woven Synthetic
  • California Restricted Not legal for sale or use in California
  • Clamp Material Stainless Steel
  • Clamp Style Worm Gear
  • Clamps Included 3
  • Couplers Included 2
  • Intake Pipe Color / Finish Black
  • Intake Pipe Material High-Density Cross-Linked Polyethylene
  • Replacement Filter RU-3138HBK
  • Estimated Horsepower Gain 16.7 HP @ 2100 RPM
  • Mounting Hardware Included Yes
  • Oil Included No
  • Street Legal In All US States Not legal for sale or use in California on any pollution controlled motor vehicle.
  • TUV Approved (Europe) No
  • Package Material Corrugated
  • Package Type Box
  • Warranty No-Hassle Lifetime Limited
  • Air Box Included Yes
  • Air Filter Washable Yes
  • Clamp Color/Finish Natural
  • Mass Air Flow Sensor Adapter Included Yes
  • Coupler Color/Finish Black
  • Prop 65 Yes/No Yes
  • Prop 65 (C, R or CR) CR
  • Prop 65 - Short Label WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
  • Prop 65 Warning Label https://media.knfilters.com/prod/media/images/l/Prop65.jpg
  • Intake Pipe Ports All intake tube ports needed for the specified applications are included
  • Estimated Torque Gain 40lbft @ 2052rpm
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