![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)
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
2000-2006 BMW M3 Air Filter Replacement (2000, 2001, 2002, 2003, 2004, 2005, 2006) - iFixit Repair Guide
![Amazon.com: Mann Oil Air Carbon Cabin Filter Service Kit for BMW E46 E83 325Ci 325i 330i X3 : Automotive Amazon.com: Mann Oil Air Carbon Cabin Filter Service Kit for BMW E46 E83 325Ci 325i 330i X3 : Automotive](https://m.media-amazon.com/images/I/71T4Ii2IjpL.jpg)
Amazon.com: Mann Oil Air Carbon Cabin Filter Service Kit for BMW E46 E83 325Ci 325i 330i X3 : Automotive
![BMW E46 Air Filter Replacement | BMW 325i (2001-2005), BMW 325Xi (2001-2005), BMW 325Ci (2001-2006), BMW 325ti (2001-2004) | Pelican Parts Technical Article BMW E46 Air Filter Replacement | BMW 325i (2001-2005), BMW 325Xi (2001-2005), BMW 325Ci (2001-2006), BMW 325ti (2001-2004) | Pelican Parts Technical Article](https://cdn4.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/05-BASICS-Engine_Air_Filter_Replacement/images_med/pic08.jpg)