Cold Air Intake BMW M340i M240i G20 G21 G42 B58 (2020-2026) 3.0L

High-Flow Cold Air Intake for 2020-2026 BMW M2, M3, M4 (G80/G82/G87)

What it Does: Replaces the restrictive factory air box to lower intake air temperatures, improving volumetric efficiency and increasing turbocharger spool response.

The Stock M2, M3, M4 Airflow Restriction

The OEM induction system on the BMW 3.0L platform utilizes a closed-box plastic design optimized for NVH (noise, vibration, and harshness) reduction rather than maximum airflow. This restrictive architecture creates turbulence in the intake tract, forcing the turbocharger to work harder to draw in ambient air. During prolonged spirited driving or track sessions, the factory plastic components are prone to severe heat soak, absorbing radiant engine bay temperatures. This elevates intake air temperatures (IATs), prompting the ECU to pull ignition timing and throttle back boost, which directly reduces sustained power output and dampens throttle response.

The Engineering Solution

This cold air intake system overhauls the induction pathway with a high-volume 4-inch intake pipe and a massive 4-inch dry cone filter, significantly reducing pressure drop pre-turbo. Constructed with a durable black powder-coated finish, the smooth inlet pipe minimizes internal friction and optimizes airflow dynamics. The included powder-coated heat shield isolates the filter element from the exhaust manifold and engine block, actively mitigating heat soak. By delivering a denser, cooler air charge, this system yields documented peak gains of 12-14 horsepower and torque. Additionally, the dry filter media ensures easy maintenance and zero risk of MAF sensor oil contamination, all while amplifying the aggressive induction sound of the 3.0L turbo.

Technical Specifications

Compatibility

• For BMW B58 3.0L
• 2019+ M340i G20 G21
• 2020+ M440i G22 G23
• 2022+ M240i G42
• NOT for B58 Gen 3

The BMW Precision Caliber

Designed for the strict tolerances of modern BMW engine management, this intake system provides bolt-on performance without triggering Check Engine Lights. It delivers the precise airflow, consistent IATs, and aggressive induction tone required for a high-performance European platform.