Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Premium, Replacement Car Air Filter: Compatible with 2008-2013 BMW M3, E-2994 : Automotive
BMW 3-Series (E90/E91/E92/E93) M3 Performance Air Filter by BMC - North American Version - FB577/08 - Your One Stop Shop
BMW 3-Series (E90/E91/E92/E93) M3 Performance Air Filter by BMC - North American Version - FB577/08 - Your One Stop Shop