The BMW E46 M3 CSL Airbox from Eventuri is a 100% prepreg carbon fiber airbox that uses the latest cutting-edge technology to deliver a lightweight and strong construction. Its perfect shape and design ensures perfect fitment to 2001-2006 BMW E46 M3s. Its installation adds impressive extra power, throttle response and a fantastic induction roar, making it an ideal all-round sports car.
Fitment: E46 M3 (01-05)
- Perfect Shape and Design
- Lightweight and strong construction
- 100% prepreg carbon fiber
- Perfect Fitment
Variant Option
| CONFIGURATION | PART NUMBER | BEST FOR |
|---|---|---|
| Hybrid Airbox + Full Carbon Intake | EVE-E46ABX-CF-INT | Owners upgrading from the factory airbox |
| Hybrid Airbox Only, reuse Eventuri intake housing and scoop | EVE-E46ABX-CF-PLM | Existing Eventuri intake owners |
Key Benefits
- Authentic CSL induction sound with full MAF compatibility
- No ECU conversion required and no tune required
- Smooth, OEM like throttle response and drivability
- CFD optimized internal geometry for efficient flow
- Patented Venturi filter housing for stable, laminar airflow
- Prepreg carbon construction for strength, heat stability, and resonance
- Cold air scoop saturates the intake mouth while preserving brake duct airflow
What Is Included
Full Hybrid Airbox + Intake (EVE-E46ABX-CF-INT)
- Carbon fiber main airbox
- Carbon fiber airbox snorkel with MAF tube and CNC MAF boss
- Six pre-installed thermoplastic molded trumpets with CNC stainless reinforcement rings
- Carbon fiber filter housing
- Bespoke dry high flow filter
- Carbon fiber cold air scoop
- Stainless steel brackets and flanges
- CNC machined breather adapters
- Custom EPDM flexible coupler
- Silicone couplers
- Crankcase breather hose
- Additional vacuum tubing and mounting hardware
Hybrid Airbox Only, reuse existing Eventuri intake (EVE-E46ABX-CF-PLM)
- Carbon fiber main airbox
- Carbon fiber airbox snorkel with MAF tube and CNC MAF boss
- Six thermoplastic molded trumpets with CNC stainless reinforcement rings
- Stainless steel brackets and flanges
- CNC machined breather adapters
- Custom EPDM flexible coupler
- Silicone couplers
- Crankcase breather hose
- Additional vacuum tubing and mounting hardware
Engineering Details
The main airbox houses six trumpets and the breather connectors. It is manufactured from prepreg carbon fiber and is designed to resonate under load to produce the desired CSL sound. Long term reliability at the trumpet interface is ensured by mechanical fasteners and gaskets that maintain an airtight seal through heat cycles and vibration. The same method secures the breather adapters.
The trumpets are injection molded from glass fiber reinforced thermoplastic to achieve precise geometry and smooth internal surfaces. CNC stainless rings prevent deformation when silicone couplers are tightened.
The snorkel channels airflow from the intake into the trumpet area. It incorporates the MAF tube where the OEM sensor mounts to a CNC machined boss. Custom screws engage plastic clips so the snorkel remains secure under vibration.
CFD Optimised Development
The airbox shape was refined through iterative CFD simulations to ensure each trumpet receives adequate flow without starvation from geometry limits or turbulence.
Patented Filter Housing Technology
The carbon pod shrouds a reverse mounted bespoke dry filter and reduces cross section smoothly toward the plenum. This invokes the Venturi effect, accelerating airflow while maintaining laminar conditions and reducing pressure loss through the system. The smoother flow into the MAF section allows the sensor to operate without errors.
Cold Air Scoop
The 100 percent prepreg carbon scoop with CNC machined collar locates in the front left brake duct. It saturates the intake mouth with ambient air while leaving half the duct height open for brake cooling. After a hard drive the aluminum cowl at the intake mouth will still feel cold to the touch.
Fitment
- BMW E46 M3, model years 2001 to 2006
- S54 engine
- LHD and RHD compatible
Technical Highlights
- Prepreg carbon fiber, autoclave cured
- Patented Venturi filter housing
- CNC machined MAF boss and breather adapters
- Stainless hardware and reinforcement rings
- Gasketed, mechanically fastened interfaces for long term sealing
** This item is not eligible for return **