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Amazon.com: K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Car Air Filter: Compatible with 1996-2007 BMW L6 (325Ci, M3, X3, 320Ci, 320i, 325Ti and other select models), 33-2231 : Automotive
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AEM-21-672P - AEM Cold Air Intake System - E46 325Ci, 325i, 325xi, 328Ci, 328i, 328xi | Turner Motorsport
Mishimoto 99-05 BMW E46 323i/325i/328i Performance Cold Air Intake Kit - Black - MMAI-E46-99BK | Mishimoto | MISMMAI-E46-99BK | Gexhaust
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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
Mishimoto 99-05 BMW E46 323i/325i/328i Performance Cold Air Intake Kit - Black - MMAI-E46-99BK | Mishimoto | MISMMAI-E46-99BK | Gexhaust
Mishimoto 01-06 BMW 330i 3.0L Performance Air Intake - MMAI-E46-01BK | Mishimoto | MISMMAI-E46-01BK | Gexhaust
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AEM DryFlow Air Filter - Bmw 325I 00-05, 325Ci 00-07, X3 04-06, 330Ci 00-06 - Enjuku Racing Parts, LLC
![AEM-21-672P - AEM Cold Air Intake System - E46 325Ci, 325i, 325xi, 328Ci, 328i, 328xi | Turner Motorsport AEM-21-672P - AEM Cold Air Intake System - E46 325Ci, 325i, 325xi, 328Ci, 328i, 328xi | Turner Motorsport](https://3a663eb0fef48c6d2d60-a88f8ebfcdb877ad223e888bfcb7f7ec.ssl.cf1.rackcdn.com/1568272_x800.jpg)