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Message: <blockquote data-quote="SapphireBlack" data-source="post: 474754" data-attributes="member: 20374">Hi All,I am researching more on the BMW Performance Air Intake system in regards to the service interval. Unfortunately, I can't find much info on whether the air filter element is a BMW parts or a K&N parts. All i know is the air filter element part number is 13710445636 from RealOEM.Do anyone know when should the air filter element be changed? Every 15k or 50k? Can this part be washed/oiled just like K&N or shall we just buy a brand new one and drop it in?Appreciate your advice on this. Thanks <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>