Eventuri Hybrid Carbon Airbox System for BMW E85 / E86 Z4 M 2006-2008

The Eventuri hybrid carbon airbox system for the BMW E85 Z4 M Roadster and E86 Z4 M Coupe gives the S54 inline-six the CSL-style induction sound while keeping the factory MAF sensor working. Because the MAF stays in use, it needs no ECU tune and no Alpha-N conversion, so drivability stays OEM-like.

Unlike Eventuri's E46 M3 version, the Z4 M airbox cannot reuse the factory or an existing intake because of packaging in the Z4 M engine bay. It is sold only as a complete kit: the carbon airbox paired with a custom intake designed for the Z4 M chassis.

The pre-preg carbon airbox houses six precision-molded intake trumpets with stainless reinforcement rings and is shaped to resonate under load for the CSL note. Its geometry came from repeated CFD simulation, aimed at sharing air evenly across all six runners rather than favoring those nearest the inlet. A carbon snorkel with a CNC-machined boss holds the factory MAF in the airflow ahead of the box.

Ahead of the snorkel, Eventuri's patented carbon Venturi housing shrouds a Generation 2 high-flow filter and accelerates air while keeping the flow smooth, and a carbon scoop brings in ambient air. Mechanical fasteners, reinforced mounting points and gasketed sealing faces keep the box sealed through repeated heat cycles.

Features

• CSL-style induction sound with the factory MAF kept in use
• No ECU tune or Alpha-N conversion required
• CFD-developed airbox geometry for even flow to all six runners
• Patented carbon Venturi filter housing with Generation 2 filter
• Carbon cold-air scoop
• Complete kit; the factory intake cannot be reused

What's Included

• Pre-preg carbon fiber main airbox
• Carbon fiber airbox snorkel with CNC-machined MAF boss
• 6 x thermoplastic intake trumpets with stainless reinforcement rings
• Carbon fiber Venturi filter housing
• Generation 2 high-flow dry filter
• Carbon fiber cold-air scoop
• Crankcase breather hose, vacuum tubing and CNC breather adapters
• Silicone couplers, EPDM flexible coupler and stainless brackets

Specifications

• Part number: EVE-Z4MABX-CF-INT
• Brand: Eventuri
• Type: hybrid carbon airbox and intake system
• Material: pre-preg carbon fiber, autoclave cured
• Finish: gloss
• Engine: BMW S54 3.2L inline-six
• Made in: UK

Fitment Notes

• Fits the E85 Z4 M Roadster and E86 Z4 M Coupe with the S54 engine only; not for other Z4 models.
• Sold only as the complete airbox and intake package.
• Published gains for this airbox design come from E46 M3 testing, not Z4 M testing.
• Installation by a qualified technician is recommended. Not eligible for return once opened.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Vehicle Fitment