Karbonius BMW E46 M3 S54 Carbon Fiber OEM Style Airbox Start Button Here are the benefits:

Here are the benefits:

It is also the first truly do-it-yourself and reversible conversion kit using the famous "bullet proof" Vortech Engineering supercharger unit

and a thunderous roar when you unleash its full potential

airbox cover

Karbonius BMW E46 M3 S54 Carbon Fiber OEM Style Airbox Start Button Here are the benefits:Kit Includes: Airbox CNC machine made items of anodized aluminum Stainless steel screws Certificate of authenticity The M3 CSL Carbon Airbox is one of the most demanded improvements among E46 M3 enthusiasts. This is due to the performance gain of course, but even more enjoyable is the intake sound it brings to car. Unfortunately, upgrading to the CSL airbox is both labor intensive and time consuming; requiring a number of additional parts, wiring, and