Karbonius Carbon Fibre Airbox Race Version BMW E46 M3

By Karbonius
From £1,895.00
Made to Order – Lead Time TBC

Karbonius Carbon Fibre Race Intake – BMW E46 M3 (S54)

Unlock the full potential of your S54 engine with the Karbonius Carbon Fibre Race Intake – one of the most advanced airbox systems available for the BMW E46 M3. Hand-built in Spain from 100% prepreg carbon fibre and cured in autoclave, this intake offers significant power gains, razor-sharp throttle response, and an aggressive induction sound, while reducing weight and lowering intake air temperatures.

Why Upgrade?

Proven Performance on Track

The factory intake system on the S54 engine is effective but restrictive under high-performance use. The Karbonius Race Intake addresses this with:

  • Appreciable gains in power and torque across the rev range

  • Sharper throttle response for precise driver input

  • Integrated snorkel design to feed cold air directly from the front of the car

Motorsport DNA

  • Built from prepreg carbon fibre for maximum strength, lightness, and heat resistance

  • Internal carbon trumpets for optimised airflow and efficiency

  • Aggressive “double bubble” styling to complement the M3’s performance look

Acoustic Drama

Beyond performance, the Karbonius intake delivers an unmistakable induction roar, transforming the character of the S54 engine and adding to the thrill of every drive.

Key Features

  • Appreciable power and torque gains

  • Carbon fibre trumpets for maximum efficiency

  • Built-in snorkel for cold air feed

  • CNC-machined anodised aluminium fittings

  • Stainless steel hardware

  • Reinforced in all stress points

  • High-gloss UV-protected finish

  • Lightweight, durable prepreg carbon fibre construction

  • Exclusive, numbered piece with certificate of authenticity

  • 2-year manufacturing defect warranty

Compatibility

  • BMW E46 M3 (S54)

  • BMW Z4 M (S54) – requires additional hoses (not included)

  • BMW Z3 M (S54) – requires additional hoses (not included)

Important Fitment Notes:

  • ECU remap is required for correct performance.

  • Professional installation strongly recommended – this is a motorsport-grade part.

  • While designed for OEM-style fitment, some adjustments may be necessary.

  • Intended for track and race applications – road legality varies by region.

What’s Included

  • Karbonius carbon fibre airbox

  • Certificate of authenticity

  • Installation hardware
    (Air filter sold separately)

Why Choose Karbonius?

Karbonius Composites are recognised worldwide for their meticulous hand-built carbon products. Every intake is manufactured in-house in Spain under ISO 9001 quality management standards, individually numbered for authenticity, and delivered with a 2-year warranty.

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