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HJS

As a medium-sized company based in Menden in central Germany, HJS Emission Technology GmbH & Co. KG has many years of experience and expertise in the field of exhaust-gas aftertreatment. Some 450 employees are engaged in the development, production and marketing of modular systems for reducing pollutant emissions. Our innovative environmental protection technologies can be used either as original equipment or for retrofitting in passenger cars, commercial vehicles and a wide range of non-road applications. In addition to systems for spark-ignition engines, HJS specialises in systems for diesel engines – especially for reducing the emissions of soot particles (PM) and nitrogen oxides. All systems meet the statutory requirements and are certified in accordance with the valid licensing regulations.

Exhaust

Burning fuel in the engine of your BMW or MINI produces a lot of sound along with nitrogen oxide, carbon monoxide, hydrocarbons and other harmful gases during the combustion process. Your vehicle's exhaust and emissions system helps control some of that sound and cleans up the gasses in the process of routing them out of the engine bay.

For more than four decades, Bavarian Autosport has been helping BMW and MINI enthusiasts maintain, repair, and upgrade their vehicles while saving thousands of dollars in shop fees. Throughout our history it has been our mission to give every BMW or MINI owner the resources to take on nearly any repair or maintenance task themselves. With more than 100 DIY videos and free tech help available on our site, there is no job that is too big. We have a full team of advisors ready to answer your technical questions and help you find the right part for your BMW or MINI by phone or email. And if you aren't 100% satisfied with your purchase, returns are easy and hassle-free.

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