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Karbonius Carbon Fibre Airbox CSL S54 Swap - BMW E30

Regular price £1,949.99 GBP
Sale price £1,949.99 GBP Regular price
Sold out
SKU: E30AD01 - 1x1G

Fitting Available - Please email for a quote.

E30 S54 swap AIRBOX made 100% in prepreg carbon fibre in our facilities in Spain under ISO 9001 Management Quality System rules by qualified staff.

The BMW M3 E46 CSL it´s one of the famous and mythical cars on the world, and part of the success is due the carbon airbox . This intake generate what is probably one of the best noises of any sports car. For that reason a lot of BMW E30 users want to get the same noise in his E30´s S54 Swap.

As the E46 CSL Airbox does not fit correctly on the E30 chasis with S54 Engine, we did some modifications on our Airbox to get a perfect fitment on this Swaps.
The S54 E30 Airbox comes without the front inner canalization that usually brings fresh air from the front bumper.

*Even if the box has been modified on the rear, near to the servo to prevent friction in that area, we recommend installation of smaller brake booster

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

Kit includes:
• Airbox
• Certificate of authenticity
• M Power sticker

Does not include air filter (available)


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


• BMW E30 S54swap

Relatively easy assemble. Not necessary to perforate or cut anything, although changing several origin parts is necessary.

Installation Difficulty: MEDIUM

Karbonius Airbox offers 2 years warranty against manufacturing defects.

In KARBONIUS COMPOSITES we bet on the quality of our products, which are made 100 % of carbon fiber prepreg and cured in autoclave in our facilities in Spain, by a manual process, highly qualified personnel and under exhaustive quality controls. For these reasons, because we are conscious of the quality of all our products, we offer to our clients a guarantee of 2 years against any fault of manufacture. Our experience in Composites manufacture and hundreds of clients satisfied all over the world are the primary brands of a company which aim is the satisfaction of the client through an exceptional product.

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