The aFe MagnumFLOW Air Filters OER P5R A/F P5R BMW X5 01-06 L6-3.0L is a performance air filter designed to enhance the power and performance of your BMW X5. This filter is engineered to provide maximum airflow and filtration efficiency. It is constructed with 100% polyurethane on all sides for long-lasting durability and multiple layers of progressively finer mesh synthetic media for maximum convenience. It is designed to provide maximum performance and protection, and is washable and reusable for multiple cleaning cycles.