Cold Air Intake for BMW M240i M340i M440i B58 (2021-2026) 3.0L

High-Flow Carbon Fiber Cold Air Intake for 2021-2026 BMW M2, M3, M4 (G-Series 3.0L)

What it Does: This carbon fiber cold air intake replaces the restrictive factory airbox and corrugated piping to lower intake air temperatures, delivering verified gains of 12-14 horsepower and sharper throttle response.

The Stock BMW Induction Weakness

OEM BMW intake systems utilize baffled plastic airboxes and corrugated inlet tubes designed primarily to suppress induction noise rather than optimize velocity. This baffling creates internal turbulence, disrupting the laminar flow required by the turbocharger's compressor wheel. Furthermore, standard factory plastic enclosures are highly susceptible to heat soak within the cramped G-chassis engine bay. As under-hood temperatures rise during spirited driving or track use, the OEM system ingests hotter, less dense air. This forces the ECU to pull timing, ultimately reducing overall engine output and throttle crispness.

The Engineering Solution

This intake system resolves these airflow restrictions by utilizing a smooth 4-inch carbon fiber intake pipe coupled with a high-capacity 4-inch dry cone filter. The carbon fiber construction provides superior thermal resistance compared to OEM plastics, drastically reducing heat transfer to the intake charge. By eliminating the factory resonators and utilizing a straight-through, large-diameter structural design, this kit increases total airflow volume and stabilizes velocity. The dry synthetic filter media maximizes particulate filtration without relying on oil, preventing mass airflow (MAF) sensor fouling. The result is a denser oxygen charge, quicker turbo spool, and a pronounced, aggressive induction tone without triggering check engine lights.

Technical Specifications

Compatibility

• BMW B58 3.0L Turbo
• 2022-2024 M340i / M340i xDrive (B58 3.0L G20, G21, G23)
• 2022+ M240i / M240i xDrive (B58 3.0L G42)
• 2022+ M440i (G22, G23)

The BMW Precision Standard

Engineered specifically for the demands of European performance vehicles, this system ensures flawless sensor integration and CEL-free operation. It delivers consistent, repeatable power curves while maintaining the rigorous precision required by modern BMW engine management.