K&N Engineering NextGen Cold Air Intake

2025–2026 Ram 2500 / 3500 6.7L Diesel

Part #: 50-1599D

Overview

The K&N Engineering NextGen Cold Air Intake is specifically designed for the 2025–2026 Ram 2500 and 3500 models equipped with the 6.7L inline-six diesel engine. This advanced intake system replaces the factory air intake to deliver a higher volume of cooler air to the engine, improving combustion efficiency and overall performance. Ideal for diesel truck owners seeking enhanced throttle response, better fuel economy, and increased engine longevity, the NextGen Cold Air Intake offers a reliable upgrade engineered to meet the demands of heavy-duty applications.

Built with precision and backed by K&N’s reputation for quality, this intake system is a direct-fit solution that maintains factory-style installation while maximizing airflow. It is an excellent choice for drivers who want to optimize their Ram diesel truck’s power and efficiency without compromising durability or reliability.

Key Features

The K&N NextGen Cold Air Intake combines innovative design with proven technology to deliver measurable benefits. Key features include:

• High-flow air filter engineered to increase airflow while providing excellent filtration and protection against contaminants
• Precision-molded intake tube designed to reduce air turbulence and maximize smooth airflow to the engine
• Durable construction materials that withstand harsh under-hood conditions and resist corrosion
• Direct-fit design for easy installation with no permanent modifications required
• Improved throttle response and potential for enhanced fuel efficiency under various driving conditions
• Engineered specifically for the 6.7L Cummins diesel engine to optimize performance gains
• Reusable and serviceable air filter element for long-term cost savings and environmental benefits

Construction & Design

The NextGen Cold Air Intake is crafted from high-quality materials selected for durability and performance. The intake tube is precision-engineered from robust, heat-resistant composites that minimize heat soak, ensuring cooler air reaches the engine. The air filter features K&N’s signature oiled cotton gauze media, which balances superior filtration with unrestricted airflow. Every component is designed to fit seamlessly within the engine bay, maintaining factory clearances and ensuring a secure, vibration-resistant installation.

K&N’s engineering team has optimized the intake geometry to reduce airflow restrictions and turbulence, resulting in a smoother, more efficient air delivery system. This attention to detail supports the demanding performance and reliability standards expected by Ram diesel truck owners.

Installation & Fitment

Installation of the K&N NextGen Cold Air Intake is straightforward and designed to be completed with basic hand tools. The kit includes all necessary hardware and detailed instructions to guide users through the process. No cutting, drilling, or permanent modifications to the vehicle are required, preserving factory integrity and warranty considerations.

This intake is a direct replacement for the stock air intake system on 2025 and 2026 Ram 2500 and 3500 trucks with the 6.7L diesel engine, ensuring precise fitment and compatibility with existing engine components and sensors.

What's Included

• High-flow reusable air filter
• Precision-molded intake tube
• Mounting hardware and clamps
• Detailed installation instructions

Ideal For

This cold air intake system is ideal for Ram 2500 and 3500 owners who want to enhance their diesel truck’s performance without compromising reliability. It suits daily drivers, work trucks, and enthusiasts looking for improved throttle response, better fuel economy, and a durable upgrade that stands up to heavy-duty use. Whether towing, hauling, or cruising, the NextGen Cold Air Intake provides a practical performance enhancement tailored to the 6.7L Cummins diesel engine.

K&N is one of the most recognized names in performance filtration, offering reusable high-flow air filters, cold air intakes, and related filters for street and motorsports use. Their products are designed to improve airflow and serviceability—ideal for enthusiasts who want performance-oriented filtration and easy maintenance.