BMW B58 F20 F22 F30 F32 340i 440i M140i M240i K&N 33-3051 Air Filter

Direct-fit K&N 33-3051 panel filter for B58 engines in F20, F22, F30, F32, F36 and F21 chassis - including M140i, M240i, 340i, 440i and their xDrive variants. Designed for fast-road or track-day use where consistent airflow and reliable filtration matter more than showroom silence.

• Washable & reusable for life - clean every 50,000 miles with K&N cleaning kit
• Drop-in replacement - fits factory airbox without modification or tuning
• Million Mile Warranty - genuine K&N guarantee, no registration needed
• Emissions-compliant - retains OEM-style filtration efficiency, warranty-safe