K&N washable, reusable high-flow engine air filter for 2023–2025 BMW 520i applications. Built from layered, oiled cotton media to boost airflow while trapping contaminants, this drop-in replacement installs into the factory airbox and is engineered for long life. Covered by K&N's No-Hassle Lifetime Limited Warranty, it reduces disposable filter waste and aims to maintain airflow and engine protection over the vehicle's lifespan.
K&N 23-25 BMW 520i Replacement Air Filter