K&N air intake systems are engineered for increased performance, outstanding durability, and sleek aesthetics—and are available in an assortment of finishes and powder coatings. K&N's state-of-the-art High-Flow Air Filter helps to shield your engine from contaminants, while a meticulously engineered aerodynamic tube design contributes to a guaranteed increase in horsepower and torque. K&N air intake systems are designed to improve acceleration, towing, and throttle response while providing world class protection for your engine. Our intakes are dyno-tested and provide more airflow compared to OEM intake systems. K&N intakes are easy to install and maintain with air filter cleaning required only every 100,000 miles.

• GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine
• HEAR THE GROWL: K&N's intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed
• DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are include with each intake system
• FEATURING K&N's SIGNATURE, REUSABLE AIR FILTER: Combines layers of pleated, breathable cotton with K&N's red filter oil to absorb dirt and dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100,000 miles under normal highway driving conditions
• EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools
• MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support

Part Number: KN57S-4000