CSL carbon airbox

Tap right for info

It sounds & looks like the original CSL.

Pre-preg carbon enables thin walled construction to uncork the CSL signature induction noise.

It flows better.

Flow optimized trumpets create more midrange power then any OEM CSL replica airbox from 3000 to 7500 rpm.

It stays cool for longer.

The IAT Sensor bung is placed closer to the front of the airbox compared to the OE design. This has been proven to avoid heat soak issues.

It's designed to last.

All CNC'ed fittings are physically locked into the carbon housings with a thread and custom nut. Haimus backs it up with a 5 years structural warranty
BUILD JOURNAL: 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.

I take you into my unboxing of two CSL airboxes, the hardware checklist, the tuning dilemma, installation notes and my driving impressions with proper sound clips.

Cheers,
- Matt / @m3_epoustouflant

Spec your airbox
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit
Shadowline CSL Carbon Airbox Kit

Shadowline CSL Carbon Airbox Kit

  • Factory Direct Process
  • Made in Bulgaria
Regular price Register a free account or login to view prices and order
/

Specifications: 

  • Made in Bulgaria
  • Complete pre-preg carbon construction
  • ABS plastic snorkel is included
  • CNC hardware is anodized in black, including the bolts connecting the two sections
  • Available in 2 component clear coated finish in High Gloss or Frozen
  • Ceramic coated detailing
  • 5 years structural and finish warranty
  • The installation kits are exclusively sourced using Genuine BMW parts and including the original CSL air filter, and CSL dipstick. 
    • Each kit is tailored per transmission type and Manufacturing Year (MY)
    • If you are going with the MAP conversion and MSS54HP DME, I highly recommend this MAP conversion kit.
    • These kits do not include the IAT relocation wiring. I recommend the TurnerMotorsport IAT relocation kit

Simple Snorkel

A simplified, no flap design made from 3D printed ABS plastic: it's inexpensive and effective.
It's also available in satin finish.

My first CSL airbox was finished in the satin "Frozen" finish. In this entry, I cover my unboxing impressions.

Read the entry
The hardware checklist

I've compiled the parts list and options to complete your CSL airbox installation.

Read the entry
Alpha N or MAP?

I did the research and documented my decision making process in this specific entry.

Read the entry
Need help?
Been there, done that.

Explore my E46 M3 mechanical program

Coming Soon
E46 M3 V2 63.5mm performance 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
Clubsport Carbon Fiber Cooling Backing Plate
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