The K&N 33-2488 high-flow air filter is reusable and features a multi-layer, oiled cotton media. It is designed to improve airflow and trap contaminants, while also increasing horsepower. It fits in the factory airbox.
- Type: High-flow air filter
- Filter material: Multi-layer, oiled cotton media
- Reusable: Yes
- Compatibility: BMW M5, BMW M6