The kn filters for BMW are washable and reusable and are custom designed to fit into your existing BMW factory air box. Their drop-in design means adding performance to a BMW Engine is simple. You simply remove the disposable air filter and replace it with a K&N.

When any kn filter needs a clean - Use kn air filter cleaner / Recharge kit to bring the filter to new again.

BMW Part E-2022 Product Specifications
Product Style: Round Air Filter
Height: 5.331 in (135 mm)
Inner Wire: No
Inside Diameter: 6.811 in (173 mm)
Outside Diameter: 6.906 in (175 mm)
Top Style: Rubber
Top Material/Finish: None
Filter Material: Cotton Gauze
Flanges: None
Filter Re-Oiling Amount: 1.46 oz (43 ml)
Weight: 1.6 lb (0.7 kg)

2005-2011 BMW Air Filter, Cross Reference:
BMW 13717536006
Ryco  A1762

Kn Filter E-2022, fits the following:
2011 BMW X1 28I 3.0L L6 F/I - All  
2011 BMW X1 25I 3.0L L6 F/I - All  
2011 BMW 125I 3.0L L6 F/I - All  
2010 BMW X1 28I 3.0L L6 F/I - All  
2010 BMW X1 25I 3.0L L6 F/I - All  
2010 BMW 330I 3.0L L6 F/I - w/Round Filter  
2010 BMW 325I 3.0L L6 F/I - w/Round Filter  
2010 BMW 130I 3.0L L6 F/I - w/Round Filter  
2010 BMW 125I 3.0L L6 F/I - All  
2009 BMW X1 28I 3.0L L6 F/I - All  
2009 BMW 330I 3.0L L6 F/I - All  
2009 BMW 325I 3.0L L6 F/I - All  
2009 BMW 130I 3.0L L6 F/I - All  
2009 BMW 125I 3.0L L6 F/I - All  
2008 BMW 330I 3.0L L6 F/I - Non-US  
2008 BMW 325I 2.5L L6 F/I - All  
2008 BMW 323I 2.5L L6 F/I - Non-US  
2008 BMW 130I 3.0L L6 F/I - All  
2008 BMW 125I 3.0L L6 F/I - All  
2007 BMW 330I 3.0L L6 F/I - All  
2007 BMW 325I 2.5L L6 F/I - All  
2007 BMW 323I 2.5L L6 F/I - Non-US  
2007 BMW 130I 3.0L L6 F/I - All  
2006 BMW 330XI 3.0L L6 F/I - Non-US  
2006 BMW 330I 3.0L L6 F/I - Non-US  
2006 BMW 325I 3.0L L6 F/I - Non-US  
2006 BMW 323I 2.5L L6 F/I - Non-US  
2006 BMW 130I 3.0L L6 F/I - All  
2005 BMW 330XI 3.0L L6 F/I - Non-US  
2005 BMW 330I 3.0L L6 F/I - Non-US  
2005 BMW 330CI 3.0L L6 F/I - Non-US  
2005 BMW 325I 2.5L L6 F/I - 218BHP  
2005 BMW 130I 3.0L L6 F/I - All