ECS News - BMW E36 M3 Pipercross Performance Air Filter
Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Replacement Car Air Filter: Compatible 2003-2011 BMW (630i, 523i, 525i, 528i, 528i xDrive, 530i, Z4 and other select models), 33-2292 : Automotive