Wagner Tuning Toyota/BMW B58 Intake Manifold for M140i M240i 340i 440i & GR Supra

The Wagner Tuning B58 Intake Manifold is a high-performance replacement for the restrictive OEM manifold used across Toyota and BMW B58 platforms. Designed for significantly improved airflow, cooler charge temperatures and increased reliability under higher boost pressures, this manifold is a key supporting upgrade for tuned and track-driven B58 engines.

Featuring an enlarged plenum, integrated high-flow runners, and the option for multi-port injection (MPI) ports on certain versions, Wagner’s manifold is engineered for builds targeting higher power levels, sharper throttle response and improved top-end performance.

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Key Features

• Enlarged aluminium plenum for improved airflow capacity

• High-flow runner design for enhanced top-end power

• Significantly reduces pressure drop vs OEM manifold

• Supports high-boost and big-turbo applications

• Optional MPI ports depending on configuration

• CNC-machined construction for strength and precision

• Direct replacement with OEM sensor compatibility

• Designed for both road and track performance

• Ideal for tuned B58 engines including Stage 2+ and hybrid turbo setups

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Compatibility

BMW (B58 Models)

• M140i (F20/F21)

• M240i (F22/F23)

• 340i (F30/F31/F34)

• 440i (F32/F33/F36)

• 540i / 640i (G-chassis depending on generation)

• X3/X4 M40i (B58-powered variants)

Toyota

• GR Supra A90 / A91 (3.0 B58)

(Compatible with most B58 Gen 1 applications. Check specific part variant for MPI requirements.)

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Ideal For

• Tuned B58 builds running Stage 2, hybrid turbo or upgraded HPFP setups

• Supra and M Performance cars used for fast-road or circuit work

• Applications where consistent airflow and improved high-RPM performance are essential

• Drivers wanting improved throttle response and reduced intake restriction

• Engines requiring added safety margin for sustained high boost levels

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Why Choose the Wagner Tuning B58 Intake Manifold

The OEM B58 intake manifold performs well at stock power but becomes a bottleneck as soon as airflow and boost levels increase. Wagner’s manifold solves this by increasing plenum volume, reducing turbulence and stabilising airflow distribution — all of which contribute to better top-end power and a more responsive, efficient engine under load.

For Supra and BMW performance owners chasing reliable power gains without sacrificing driveability, this manifold is a proven upgrade. The optional MPI ports also add flexibility for builds targeting higher power levels while maintaining safe fuelling headroom.

Wagner Tuning’s reputation for quality engineering and precision manufacturing makes this one of the most trusted and effective B58 manifold upgrades on the market.

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Installing / Notes

• Direct-fit replacement; no custom fabrication required

• Professional installation recommended

• MPI-equipped versions will require additional fuelling hardware and tuning

• Suitable for both OEM and aftermarket intercooler setups

• Ensure ECU calibration is matched to any fuelling changes