⚡ Power up your BMW’s performance with the filter that never quits!
The K&N Engine Air Filter (model 33-2231) is a premium, washable replacement filter compatible with select 1996-2007 BMW L6 models. Featuring advanced 4-layer cotton gauze media, it boosts horsepower and acceleration while providing superior contaminant protection. Designed for longevity, it requires cleaning only every 75,000 miles and saves up to $125 over its lifetime compared to disposable filters.
| Manufacturer | K&N Engineering |
| Brand | K&N |
| Model | 1996-2007 BMW L6 (325Ci, M3, X3, 320Ci, 320i, 325Ti and other select models) |
| Product Dimensions | 25.1 x 19.38 x 4.6 cm; 348.81 g |
| Item model number | 33-2231 |
| Exterior | Machined |
| Manufacturer Part Number | 33-2231 |
| OEM Part Number | 13721730946, 13721744869 |
| Item Weight | 349 g |
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