The aFe MagnumFORCE Intakes Stage-1 P5R AIS P5R BMW Z4 (E85) 03-05 L6-2.5L M54 is an intake system designed to improve the performance of the BMW Z4 (E85) 03-05 L6-2.5L M54 engine. It features a one-piece, roto-molded, black textured plastic intake tube with a built-in air scoop to draw cold air from outside the engine compartment. The intake tube is designed with a large, clear sight window to monitor filter condition. The system also includes a high-flow, Pro 5R air filter with five layers of progressive cotton media for maximum performance and filtration. The intake system is easy to install and comes with all necessary hardware and installation instructions.