The K&N 11-17 BMW 520i/528i N20 2.0L F/I Performance Air Intake System is a high-performance upgrade designed to enhance airflow and engine efficiency. Constructed with a high-density polyethylene (HDPE) rotationally-molded tube, it increases airflow volume to deliver guaranteed gains in horsepower and torque. Paired with a washable, reusable High-Flow Air Filter featuring oiled cotton media, this system ensures long-lasting filtration and performance. The oversized, conical filter design allows for up to 100,000 miles between services under normal highway conditions. A custom heat shield helps protect intake air from engine bay heat, optimizing air density and engine response. The entire system is engineered for straightforward installation, typically completed in less than 90 minutes, making it a reliable upgrade for enthusiasts seeking improved engine performance.
This intake system is compatible with 2011–2017 BMW 520i and 528i models equipped with the N20 2.0L engine. It is designed as a direct bolt-on replacement, suitable for street and daily driving applications. The kit includes the rotationally-molded intake tube, high-flow air filter, and heat shield, providing all necessary components for installation. Some versions may not be legal for sale or use on pollution-controlled vehicles in California, so users should verify CARB compliance if required. This system is ideal for drivers seeking increased horsepower, torque, and improved throttle response while maintaining durability and ease of maintenance.
