The aFe MagnumFORCE Intakes Stage-2 P5R AIS P5R BMW 3-Series (E46) 99-06 L6-2.5L/2.8L/3.0L is a performance air intake system designed to increase engine power and efficiency. It features a high-flow, one-piece sealed housing with a washable/reusable conical air filter that increases air flow for improved performance. The intake system also includes a heat shield to protect the filter from engine heat and a Pro 5R oiled 5-layer progressive media for maximum filtration. The kit also includes all necessary hardware for installation and a detailed installation guide.