Give your L5P Duramax the airflow it deserves with the K&N Cold Air Intake System, designed to increase performance, improve throttle response, and enhance overall engine efficiency. Built as a direct upgrade over the restrictive factory intake, this system allows your truck to breathe easier — translating into better power and a more responsive driving experience.
At the heart of the system is K&N’s high-flow, oiled cotton air filter, engineered to capture contaminants while maximizing airflow. Unlike disposable filters, this reusable design can be cleaned and re-oiled, giving you long-term performance without constant replacements.
The intake tube is precision-engineered to reduce restriction and maintain proper airflow characteristics, while the heat shield helps protect incoming air from engine bay temperatures. The result is cooler, denser air feeding your engine — exactly what your Duramax needs whether you're daily driving, towing, or pushing it harder.
Key Benefits:
• Increased horsepower and torque potential
• Improved throttle response
• High-flow, reusable oiled air filter
• Enhanced engine sound under throttle
• Heat shield helps reduce intake temps
• Simple bolt-on installation – no tuning required
If you’re after a proven, performance-driven intake with long-term value, the K&N system is a solid upgrade for your 2017–2019 L5P.