The K&N high-flow air filter is washable and reusable, with four layers of oil-impregnated cotton material. Its construction filters dust, dirt, and contaminants while allowing airflow to the engine.
It is designed as a direct replacement for the factory filter and comes pre-oiled, ready to install. Under normal highway driving conditions, it needs cleaning every 75,000 km or 5 years.
- Type: High-flow air filter
- Compatibility: BMW M3
- Material: Multi-layer oil-impregnated cotton material
- Layers: 4
- Cleaning: Every 75,000 km or 5 years under normal highway driving conditions
- Installation: Direct replacement for the factory filter
- Condition upon installation: Pre-oiled