![Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.5L, L6, 1999-2005 BMW 3 Series (325Ci, 325i, 323 Ci, 328Ci, 328),57-1002 : Automotive Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.5L, L6, 1999-2005 BMW 3 Series (325Ci, 325i, 323 Ci, 328Ci, 328),57-1002 : Automotive](https://m.media-amazon.com/images/I/516R1SxCmxL._AC_UF894,1000_QL80_.jpg)
Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.5L, L6, 1999-2005 BMW 3 Series (325Ci, 325i, 323 Ci, 328Ci, 328),57-1002 : Automotive
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Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Premium, Replacement Car Air Filter: Compatible with 2004-2012 BMW (316i, 318i, 320i, 118i, 120i, X1 18i, 116i, 320si), E-2021 : Automotive
![Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.5L, L6, 1999-2005 BMW 3 Series (325Ci, 325i, 323 Ci, 328Ci, 328),57-1002 : Automotive Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.5L, L6, 1999-2005 BMW 3 Series (325Ci, 325i, 323 Ci, 328Ci, 328),57-1002 : Automotive](https://m.media-amazon.com/images/I/516R1SxCmxL.jpg)