Genuine BMW Air Filter Element - E9x M3 2008-2009

Genuine BMW Air Filter Element - E9X M3 2008-2009 The air filter must clean 8000-9000 gallons of air for each gallon of gasoline burned inside the engine, without restricting the air intake. Air filter replacement at recommended intervals lets an engine breathe properly while protecting it from costly damage. Air filters should be inspected and replaced as needed at least once a year, more often if the vehicle is driven in heavily polluted or dusty conditions. For vehicles with production date to 09/2009