Mishimoto - BMW E46 Performance Air Intake, 1999–2005(MMAI-E46-99BK) – Drift HQ
K&N Cold Air Intake BMW 330i 330ci 330xi E46 3.0 (01-05) [FIPK w/ Heat – Redline360
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
K&N Air Intake 57 & 63-Series for 1999-2006 BMW 3-Series/M3 [E46] (57-1001/57-1002/57-1003)
57-1001 - K&N FIPK Performance Gen II Intake System - E46 330i/Ci/xi M54 3.0L | Turner Motorsport
K&N Performance Air Intake System BMW 318i 1998 1.9L 4-Cyl | 57-0393
K&N Typhoon Intake System - BMW E46 323, 325, 328 1999 - 2005, 57-1002