The aFe MagnumFORCE Intakes Stage-2 P5R AIS P5R BMW M3 (E46) 01-07 L6-3.2L is an air intake system designed to improve the performance of your BMW M3 (E46) from 2001 to 2007. It features a high-flow air filter, a polished aluminum intake tube, and a heat shield to protect the filter from engine heat. The intake tube is designed to maximize airflow and reduce restriction, while the heat shield helps to keep the air filter temperature low for optimal performance. This air intake system is designed to increase horsepower, torque, and acceleration, while also providing improved engine sound.