Dive into the world of performance with our Downpipe 300CPSI catalytic converter for your BMW M135i. Designed to push the limits of your driving experience and take driving pleasure to a new level.

Optimum diameter of 76mm: For an improved exhaust gas flow and optimized power delivery.
High-quality stainless steel 1.4301 (SS304): A guarantee for durability, corrosion resistance and first-class quality.
CAD-designed: Every detail has been carefully planned to ensure a perfect fit and optimum performance.
Two lambda probe connections: Flexible and adaptable for different configurations.
Racing main catalytic converter (300 CPSI): With high-quality Euro 6 coating for optimum performance and environmental compatibility.
100% perfect fit: Easy to replace with the standard part without additional adjustments.
Less thermal load on the turbocharger: Protects the turbocharger from excessive heat, promotes engine longevity.
More power through back pressure reduction: Optimizes the exhaust gas flow and increases the performance of your BMW M135i for an impressive driving experience.
Connection diameter of 118mm: For a smooth and precise installation.
Lightweight: At just 4.0 kg, it contributes to weight reduction without compromising performance.
Noticeably more torque: Experience increased power and impressive torque that takes your vehicle to a new level.

Ready to conquer the roads? Our Downpipe 300CPSI catalytic converter is the perfect choice for anyone looking for performance and quality.

The Downpipe kit is suitable for the following vehicles:
BMW M135i(x) F20 / F21 from year of manufacture: 07/2013
BMW M235i(x) F22
BMW M2 F87 N55 (not suitable for the Competition version)
BMW 335i(x) F30 / F31 / F34 from year of manufacture: 07/2013
BMW 435i(x) F32 / F33 from year of manufacture: 07/2013
BMW X3 M35i F25 LCI from 2014
BMW X4 M35i F26 from model year: 07/2014
BMW X4 M40i from year: 07/2014

*Replaces original BMW article number: 18328602882

Part number: 500001013

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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.