The BMW M3 E46 CSL it´s one of the famous and mythical cars on the world, and part of its success is due the carbon airbox. This intake generates what is probably one of the best noises of any sports car.

Our KARBONIUS CSL STYLE AIRBOX it´s a replica of the original one based on 3D scan of the original but presents several differences with the genuine BMW CSL Airbox. Among others:

1- Trumpets made in carbon fibre instead in plastic, what make our airbox even lighter.
2- Diameter and shape of the trumpets modified, 51,5 mm diameter instead 50 mm and a round shape on the front of the trumpets contributes to better airflow.
3- Exclusive 6th trumpet design, the 6th trumpet gets less air , so we redesigned the shape of this trumpet to optimise airflow and we accomplished a 1hp gain with this modification.
4- We have also softened some shapes and varnished the interior, which minimises turbulance inside the airbox.

Depending on the state of your car and mapping selected you could get up to 25HP.

All our pieces are numbered, so its origin and authenticity are guaranteed.

Kit includes:

• Airbox
• Bracket ventilation valve
• Certificate of authenticity

*Does not include air filter (available)

Features:

• Aerodynamic design
• CNC machine-made items of aluminium
• Stainless-steel screws
• Great fitment
• Reinforced in all key points, crews, connectors, etc.
• Awesome sound
• 100% carbon fibre prepreg
• Cured in autoclave
• Exclusive and numbered piece
• Aggressive appearance
• 5 years warranty

Fitment:

• BMW M3 E46

Installation:

• REMAP needed
• Instructions are not included, professional installation is highly recommended
• Additional parts may be needed for installation
  
• Not necessary to perforate or cut anything, although changing several origin parts could be necessary.

Notice of installation: Although our products are designed for an OEM-like fit, some minor adjustment may be required. Check that the fitting of the part is as expected before making any painted or modifications to the parts or to the car . Karbonius Composites will not be responsible for the costs of revert the vehicle to its original condition, or any painting expenses.

Warranty:

• 5-year warranty against manufacturing defects