CSL Carbon Airbox

Tap right for info. Scroll down to order.

1:1 Design Replica

The exterior shape of Karbonius CSL airbox mimics the original BMW Motorsport design

Improved trumpets.

The trumpets' shapes were slightly enlarged, and revised for improved flow. They are made from carbon instead of plastic.

Complete carbon construction.

Made using the "dry carbon" method: pre-preg resin, cured in autoclave.

OE fitment.

The original bungs were replicated in machined aluminum, anodized in black.
Spec your airbox
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica
CSL 1:1  Carbon Airbox Replica

CSL 1:1 Carbon Airbox Replica

Regular price Register a free account or login to view prices and order
/
Shipping calculated at checkout.

Specifications: 

  • Made in Spain
  • 1:1 exterior replica
    • CNC machined aluminum bungs anodize in matte black
    • Matching weave alignment to OEM
    • Finishes: Gloss or Matte clear coated
    • Optional carbon snorkel without flap mechanism
  • Complete pre-preg carbon construction cured in autoclave
    • Weave pattern: 1x1 and 2x2 OEM CSL matching
    • Weight: 1.7 kg
  • Revised trumpet design for improved performance:
    • Power: +25hp (depending on tune)
  • Exclusive and numbered piece
  • 5 years warranty
  • Fitment guaranteed

Installation Hardware

I have curated installation kits per the E46 M3's specific production years and transmission types using Genuine BMW products.

BMW M Power sticker included.

The signature BMW M Power sticker is provided with the airbox. If you plan on installing it, I recommend it is applied and re-cleared for a seamless finish.

Optional matching carbon snorkel.

The Karbonius design mimics the original BMW M snorkel, without the flap mechanism. If spec'e with the CSL airbox, it will come in matching weave pattern and finish.

Build journal: A Special series
Buying the airbox is only half the way there.

These CSL airboxes are complex - the engineering & design expertise is not only for performance, sound but most importantly: reliability.

In this Special Series, I document my extensive experiences with CSL airboxes with 3x different airboxes I have tested.

I document the hardware checklist, the tuning dilemma between MAP v Alpha N, installation notes and my driving impressions with proper sound clips.

Cheers,
- Matt / @m3_epoustouflant

Need help?
Been there, done that.

Explore my E46 M3 powertrain program

Sale
E46 M3 Supersprint 63.5mm Complete Exhaust Systems
Regular price Register a free account or login to view prices and order Sale price Register a free account or login to view prices and order
Sale
E46 M3 V3 Carbon Fiber Driveshaft
Regular price Register a free account or login to view prices and order Sale price Register a free account or login to view prices and order
Sale
Performance Power Steering Reservoir
Regular price Register a free account or login to view prices and order Sale price Register a free account or login to view prices and order
Sale
E46 M3 Supersprint Headers Kit
Regular price Register a free account or login to view prices and order Sale price Register a free account or login to view prices and order