Air intake for BMW 740i G11 G12 Gen2 B58 (2016-2024) 3.0L

High-Flow Cold Air Intake for 2016-2024 BMW 7 Series (B58 / G11 G12)

Replaces the restrictive factory-baffled airbox with a high-volume aluminum induction system to reduce intake resistance and lower charge air temperatures on the B58 engine.

The Stock 7 Series Intake Limitation

The OEM G11 and G12 intake tract is engineered primarily for noise, vibration, and harshness (NVH) suppression rather than maximum flow efficiency. To achieve the cabin silence expected of a 7 Series, BMW utilizes a multi-chambered plastic resonator box and corrugated intake bellows that create significant internal turbulence and airflow separation at higher RPMs. Furthermore, the factory plastic housing is highly susceptible to heat soak during extended operation. As the B58 engine’s closed-deck block generates substantial thermal energy, the stock airbox traps this heat, leading to elevated Intake Air Temperatures (IATs). This forces the ECU to pull ignition timing to prevent detonation, effectively robbing the vehicle of its factory-rated torque curve and throttle response.

The Engineering Solution

This performance kit addresses these bottlenecks by utilizing mandrel-bent aluminum piping paired with a 360-degree inverted cone reusable filter. The smooth-bore aluminum construction ensures a consistent laminar flow into the turbocharger inlet, reducing the parasitic drag on the compressor wheel. By incorporating a dedicated heat shield, the system isolates the air intake from the radiator and engine block's radiant heat, ensuring a denser oxygen charge enters the combustion chamber. The inverted cone design maximizes the filter's surface area, significantly reducing pressure drop across the media. This mechanical optimization results in measured dyno gains of up to 16hp and 28nm of torque, while providing a more pronounced induction note that reflects the B58's performance capabilities without triggering a Check Engine Light (CEL).

Technical Specifications

Compatibility

• BMW 2 Series: 2022+ G42 B58 M240i / M240i xDrive
• BMW 3 Series: 2019-2025 G20 G21 B58 BMW M340i and M340i xDrive
• BMW 4 Series: 2021-2024 G22 G23 G26 Gen 2 B58 BMW M440i and M440i xDrive including Gran Coupe
• BMW 5 Series: 2017-2024 G30 G31 GEN2 B58 BMW 540i including xDrive
• BMW 7 Series: 2016-2024 G11 G12 Gen2 B58 BMW 740i including xDrive
• BMW 8 Series: 2019+ G15 G14 GEN2 B58 BMW 840i including Gran Coupe and xDrive

The BMW Precision Standard

This intake system is engineered to maintain the high mechanical standards of the G-Series chassis. By improving the volumetric efficiency of the B58 engine, it delivers a sharper throttle response and consistent power delivery throughout the powerband. Designed as a direct bolt-on application, it requires no permanent modifications, ensuring a factory-quality fit and finish that complements the precision of BMW's engineering.