Drop in air filters. Read before changing...important - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
For 07-12 BMW 328i E90/E92/E93 3.0L 6cyl Black Cold Air Intake + K&N Air Filter | eBay
K&N Replacement Air Filter for BMW B58 M240 340 440 | Increase Horsepower & Performance
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Air Filter K&N 33-2294 ANYONE USE THIS? | BimmerFest BMW Forum
K&N 33-3171 Replacement Air Filter - Fits 2020-2022 BMW (M3, M4) 33-3171 | eBay
Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Premium, Replacement Car Air Filter: Compatible with 2006-2014 BMW (128i, 328i, 325i, 328i xDrive, 330i, 130i, 328xi), 33-2332 : Automotive
Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Premium, Replacement Car Air Filter: Compatible with 2006-2014 BMW (128i, 328i, 325i, 328i xDrive, 330i, 130i, 328xi), 33-2332 : Automotive