Why Choose Wagner Tuning?

Wagner Tuning is globally recognized for developing high-performance cooling solutions for turbocharged vehicles. Each intercooler is engineered using CFD flow simulations and high-quality materials to ensure superior thermal efficiency and durability. The Downpipe Kit B58 for BMW X3 M40i is the perfect solution for enthusiasts looking to unlock the full potential of their platform while maintaining long-term reliability.

Wagner Tuning product information about Wagner Tuning Downpipe Kit B58 for BMW X3 M40i 500001027

Revolutionary Wagner tuning downpipe kit for BMW B58 engine: Maximum performance and flexibility

Experience the ultimate performance increase with our state-of-the-art downpipe kit, specially developed for the BMW B58 engine. Our kit gives you the option to choose between a 200CPSI racing catalytic converter or a variant without catalytic converter to meet your individual requirements.

Technical data:

High-quality cast stainless steel 1.4301 (SS304) for optimum durability and corrosion resistance.
Complete with Ø3.5 diameter and adapter to original AGA for a perfect fit.
CAD-designed and flow-optimized to improve flow dynamics and maximize performance.
Equipped with 2 lambda probe connections for precise exhaust gas measurements.
Optionally with racing metal catalytic converter (200 CPSI EU6 coating) or completely without catalytic converter for maximum flexibility.
Simple replacement with the standard part, 100% accuracy of fit guaranteed.
Reduction of the thermal load on the turbocharger, which increases the service life.
Increased performance through back pressure reduction for an impressive driving experience.
Significant increase in torque for a noticeable improvement in driving performance.

Maximum performance, maximum flexibility:

Our downpipe kit for the BMW B58 engine not only offers a significant increase in power, but also the flexibility to customize the power configuration to your own preferences.

Quality and innovation:

With our downpipe kit, you are relying on quality and innovation. Meet your performance targets and experience the incomparable performance of your BMW.

downpipe kit with 200CPSI racing catalytic converter or without catalytic converter for BMW B58 engine.
BMW F20/21 M140i 3.0L 250KW/340PS 2016 – 2018 (OPF models excluded)
BMW F22/23 M240i 3.0L 250KW/340PS 2016 – 2018 (OPF models excluded)
BMW F30/31/34 340i 3.0L 240KW/326PS 2015 – 2018 (OPF models excluded)
BMW F32/33/36 440i 3.0L 240KW/326PS 2015 – 2018 (OPF models excluded)
BMW G30/31/38 540i 3.0L 250KW/340PS 2017 – 2018 (OPF models excluded)
BMW G32 GT 640i 3.0L 250KW/340PS 2017 – 2018 (OPF models excluded)
BMW G12 740i 3.0L 240KW/326PS 2015 – 2018 (OPF models excluded)
BMW X3 G01 M40i 3.0L 265KW/360PS 2017 – 2018 (OPF models excluded)
BMW X4 G02 M40i 3.0L 260KW/354PS 2017 – 2018 (OPF models excluded)

The downpipe kit replaces the following BMW original part: 18328631625

Part number 500001027

Only suitable for cars without GPF!
Error display in the DME possible.
Not permitted in the area of ??the STVO.

Disclaimer for catalytic converters
It should be noted that Wagner Tuning catalytic converters are intended for use on OEM vehicles for performance optimization. They are NOT intended for use in conjunction with ECU tuning. Wagner Tuning GmbH & Co. Kg. accepts no responsibility for damage caused by modifications to a vehicle, such as a tuned ECU and/or ‘burble’ style tunes. Wagner Tuning GmbH & Co. Kg. is also not responsible for damage caused by engine malfunctions that create rich/lean conditions that are detrimental to the catalytic converter. All claims regarding a catalytic converter are subject to a warranty check. In order for a warranty to be honored, Wagner Tuning GmbH & Co. Kg. requires the purchaser to prove that the engine has been set up unchanged and in accordance with the original manufacturer’s specifications and has been kept in proper working order. The end user assumes all responsibility for the legality of the use of a non-OEM catalytic converter on their vehicle for the region in which it is used.