HJS has many years of experience and expertise in the field of exhaust-gas aftertreatment. Thanks to our innovative technologies and products we are making an important contribution to protecting mankind and the environment.

HJS for the Aftermarket

HJS for the Aftermarket

Both automotive wholesalers and workshops will find information on HJS's specialist aftermarket products in this section. read more ...

HJS Retrofit

HJS Retrofit

HJS offers solutions for retrofitting public transport buses, forklift trucks, construction machinery and many other applications. read more ...

HJS for the OEM Segment

HJS for the OEM Segment

HJS has already proven its expertise in a large number of emissions aftertreatment projects in the OEM segment, too. read more ...

HJS Motorsport

HJS Motorsport

Since 1990 HJS is producing and developing catalysts and exhaust systems for motor sports. read more ...

HJS Tuning

HJS Tuning

For 10 years, we have been engaged in the development and production of catalysts and exhaust systems for tuned passenger cars. read more ...

About HJS Emission Technology GmbH & Co. KG

For more than 30 years, we have been engaged in the development, production and marketing of modular systems for reducing pollutant emissions. HJS's market presence is characterised by innovative technologies and products, excellent quality and a strong customer focus. At the same time, the company is making an important contribution to protecting mankind and the environment. read more ...

Initial Vocational Training

As a modern, dynamic business, every year we offer young people an opportunity to step onto the first rung of the ladder in their professional development. read more ...
Come and join our team

www.hjs.com/aftermarkt   |   www.hjs.com/retrofit   |   www.hjs.com/oem   |   www.hjs-motorsport.de   |   www.hjs-tuning.de   |   www.hjs-drm.de