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The K&N drop‑in high‑flow air filter for BMW M3 4.0L V8 (2008–2013) is a reusable replacement designed to improve airflow and help increase horsepower. Layered oiled cotton media captures contaminants while allowing higher flow; the filter is engineered to last the vehicle’s life and is backed by K&N’s No‑Hassle Lifetime Limited Warranty. It installs easily into the factory air box for a simple upgrade.
K&N 08-11 BMW M3 4.0L V8 Drop In Air Filter
