The aFe MagnumFORCE Intakes Stage-1 P5R AIS P5R BMW Z4 M (E85/E86) 06-08 L6-3.2L (S54) is a performance air intake system designed to improve the power and performance of your BMW Z4 M. This system is constructed from 3 mandrel-bent aluminum tubing for maximum airflow and includes a one-piece heat shield that keeps the filter isolated from engine heat. The intake system also features a Pro 5R air filter with five layers of progressive cotton media for maximum filtration and a high-flow, non-oiled, washable/reusable filter media. This intake system also includes a Pro DRY S oil-free filter for maximum convenience. This system is designed to increase horsepower and torque, and is backed by aFe's limited lifetime warranty.