Karbonius’ Carbon Fiber Race Airbox for BMW E46 M3 CSL models is made from 100% prepreg carbon fiber in Karbonius’ facilities in Spain under ISO 9001 Management Quality System Rules.
Karbonius put a lot of attention to match the weave in the different parts of the intake, which in turn creates a perfect seal with the neoprene foam gasket between the two parts of the airbox.
Horsepower gains up to 25HP could be achieved when airbox is combined with proper engine tuning. Of course, other benefits will be improved throttle and fantastic induction roar.
Based on the original E46 M3 CSL Airbox, Karbonius made several key modifications to the original BMW design, including:
1- Trumpets made in carbon fiber rather than plastic improve weight savings.
2- Increased trumpet diameter from 51.5mm to 50mm and rounded trumpets openings for improved airflow over OEM
3- Exclusive 6th Trumpet design increases airflow to the 6th trumpet for improved performance
4- Smoothed shapes and coated interior contribute to minimized turbulence inside the airbox.
All Karbonius airboxes are numbered to ensure origin and authenticity.
High gloss finish offers UV protection.
Kit includes:
- Airbox
- CNC machined, anodized aluminium components
- Stainless-steel screws
- Certificate of authenticity
- Bracket ventilation valve
*Does not include air filter
Features:
- Appreciable gain in power
- Built-in snorkel
- Extremely lightweight design, with carbon fiber trumpets
- Aerodynamic design
- Great fitment guaranteed, simple installation
- Reinforced in all key points; screws, connectors, etc.
- Awesome sound
- 100% prepreg carbon fiber
- Cured in mould and autoclave
- Exclusive and numbered piece
- Aggressive appearance
- 2 year warranty
Fitment:
- BMW E46 M3
- BMW Z3 M S54B32