K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Specifications:
- Filter Material: Cotton Gauze
- Height: 140 mm
- Inner Wire: No
- Inside Diameter: 51 mm
- Outside Diameter: 89 mm
- Top Style: Open
- Top Material: None
- Air Filter Shape: Round
- Flanges: None
- Package Contents: 1 Air Filter
- Package Quantity: 1
- Warranty: 1,000,000 Miles/10 Year
- Washable: Yes
- Product Style: Round Air Filter
- Weight: 0.3 kg
- Filter Re-Oiling Amount: 19 ml
- Product Box Height: 184 mm
- Product Box Length: 117 mm
- Product Box Width: 117 mm
Vehicle applications:
| Make | Model | Engine | Year | Specific |
| Smart | Cabrio | 0.6L L3 Gas | 2000-2004 | |
| Smart | Cabrio | 0.7L L3 Gas | 2007-2007 | To 3/07 |
| Smart | Cabrio | 0.7L L3 Gas | 1998-2006 | |
| Smart | Cabrio | 0.8L L3 Diesel | 2001-2004 | |
| Smart | City Coupe | 0.6L L3 Gas | 1998-2004 | |
| Smart | City Coupe | 0.7L L3 Gas | 2007-2007 | To 3/07 |
| Smart | City Coupe | 0.7L L3 Gas | 1998-2006 | |
| Smart | City Coupe | 0.8L L3 Diesel | 1999-2004 | |
| Smart | Crossblade | 0.6L L3 Gas | 2002-2005 | |
| Smart | Fortwo | 0.7L L3 Gas | 2007-2007 | To 3/07 |
| Smart | Fortwo | 0.7L L3 Gas | 1998-2006 | |
| Smart | Fortwo | 0.8L L3 Diesel | 2007-2007 | To 3/07 |
| Smart | Fortwo | 0.8L L3 Diesel | 2004-2006 | |
| Smart | Roadster | 0.7L L3 Gas | 2003-2006 | |
Cross references:
- Beck/Arnley 0421724
- Champ Labs. AF3907
- Fram CA9429
- Luber-Finer AF3907
- Mahle LX1805
- Mahle LX813
- Mobil AF3907
- Parts Plus AF3907
- Pronto PA5640
- Purepro A5640
- Smart 0001024V001
- Smart 0003123V007
- Smart 0003124V001
- Smart 0004591V001
- Smart 0009997V001
- STP AF3907
- Wesfil WA5088
- WIX 49068
