Upgrade your BMW X3 or X4 M40i with the aFe Magnum FLOW Pro 5R air filter, designed specifically for models from 2020 to 2024. This high-performance filter features five layers of progressive oiled cotton gauze media, providing maximum airflow and filtration efficiency. The deep, open pleats increase surface area, allowing for higher flow rates while maintaining excellent dust holding capacity. This design enhances engine performance by delivering up to a 69% increase in airflow over stock filters, helping to improve throttle response and overall engine efficiency. The factory-oiled media allows for immediate use upon installation, and the filter is washable and reusable, making it a cost-effective choice for long-term maintenance. The round, evenly spaced pleat design maximizes usable surface area and ensures smooth airflow, reducing restrictions and supporting optimal engine operation. The polyurethane frame provides durability and maintains its shape through heat cycles in the engine bay, ensuring a perfect fit every time. Its flexible sealing surface conforms to even uneven filter housings, eliminating the need for gaskets or sealants and simplifying installation. This filter is engineered for street and track use, offering high performance under demanding conditions. It can be easily recharged with aFe's POWER CLEANER and blue air filter oil to restore performance after cleaning. Constructed with high-quality materials that resist degradation from heat, the aFe Magnum FLOW Pro 5R air filter delivers consistent, reliable filtration and airflow for your BMW's turbocharged engine. Improve your vehicle's performance and filtration capacity with this durable, reusable air filter designed specifically for your BMW X3 or X4 M40i. It is not CARB approved but complies with all other relevant standards and is an ideal upgrade for enthusiasts seeking enhanced engine breathing and efficiency.
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