BMW Catalytic Converter - Genuine BMW 18327643152

Product Information

BMW Catalytic Converters diagram for 740i, 340i, 340i xDrive, 440i xDrive, 440i, & more

A catalytic converter is an emissions-control device in a vehicle’s exhaust system that reduces harmful gases produced during combustion. It uses a ceramic or metallic honeycomb coated with precious metals like platinum, palladium, and rhodium to trigger chemical reactions that convert Carbon monoxide, Hydrocarbons, and Nitrogen oxides to water vapor and oxygen.

• Check Engine Light: Often triggered by oxygen sensor readings that indicate inefficient emissions conversion.
• Reduced Engine Performance: A clogged converter restricts exhaust flow, causing loss of power, sluggish acceleration, or difficulty maintaining speed.
• Rattling Noise from Under the Car: The internal honeycomb can break apart, creating a metallic rattling sound, especially when starting the engine or accelerating.

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.