Karbonius Carbon Fibre Airbox Race Version BMW E46 M3
Product Description
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:
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Appreciable gains in power and torque across the rev range
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Sharper throttle response for precise driver input
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Integrated snorkel design to feed cold air directly from the front of the car
Motorsport DNA
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Built from prepreg carbon fibre for maximum strength, lightness, and heat resistance
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Internal carbon trumpets for optimised airflow and efficiency
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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
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Appreciable power and torque gains
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Carbon fibre trumpets for maximum efficiency
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Built-in snorkel for cold air feed
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CNC-machined anodised aluminium fittings
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Stainless steel hardware
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Reinforced in all stress points
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High-gloss UV-protected finish
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Lightweight, durable prepreg carbon fibre construction
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Exclusive, numbered piece with certificate of authenticity
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2-year manufacturing defect warranty
Compatibility
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BMW E46 M3 (S54)
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BMW Z4 M (S54) – requires additional hoses (not included)
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BMW Z3 M (S54) – requires additional hoses (not included)
Important Fitment Notes:
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ECU remap is required for correct performance.
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Professional installation strongly recommended – this is a motorsport-grade part.
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While designed for OEM-style fitment, some adjustments may be necessary.
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Intended for track and race applications – road legality varies by region.
What’s Included
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Karbonius carbon fibre airbox
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Certificate of authenticity
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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.
Shipping & Delivery
Dispatch Times
Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.
UK & International Shipping
We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.
Import Duties & International Orders
International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.
Damaged Shipments
If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.
Returns
Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.
Full details are available in our Shipping Policy and Returns & Refund Policy.
Warranty & Disclaimer
Warranty
Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.
Fitment & Installation
Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.
Motorsport Use Disclaimer
Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.
Product Images & Descriptions
Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.
Full details are available in our Terms of Service and related policy pages.
