BAK Boysen Abgaskomponenten GmbH & Co. KG


Designed around state-of-the-art process technology and logistics, the Boysen plant BAK is geared towards highly flexible production of components and complete exhaust systems for passenger cars, commercial vehicles and off-highway applications. In addition, the site focuses on the production of structural components for electric vehicles. The location has been continuously expanded since the start of production in 2001 – most recently in 2017 with the construction of our largest production plant to date, BAK II, as part of a major order from Daimler Truck. 

Start of production

BAK I2001
Pressing plant2004
Extension BAK I2005
BAK II2018

Production area

BAK I12,000 m²
Pressing plant12,000 m²
BAK II48,000 m²


ServicesAssembly production (exhaust pipes, catalytic converters, silencers) and series and just-in-sequence production of complete exhaust systems, stamped and drawn parts, welding and cutting of assemblies with laser systems, production of structural components for e-vehicles, Prototype construction for hydrogen tank systems and battery casings, production of motorbike frames
CustomersMercedes-Benz Sindelfingen plant, Mercedes-Benz engine plants, Daimler Truck, Audi Ingolstadt, Neckarsulm and Györ, Porsche, BMW, Boysen Group

Key features

BAK IACB canning systems for oval and circular catalytic converters, SCR canning, 3 silencer body manufacturing lines, 2 automatic measuring cells, JIS production for Mercedes-Benz E-Class, insulation assembly
Pressing plantLarge presses 1,000 t, 1,600 t and 2,000 t , internal high pressure systems from 800-2,000 t, annealing furnaces
BAK IIFully automated manufacturing, handling and storage systems, upgrade assembly of electronic and vehicle components, optical 3D measurement technology, real-time process monitoring via digital control centre, laser centre
Energy location Simmersfeld large-scale photovoltaic systems; gas-fired combined heat and power plant; certified environmental management according to ISO 14001 and EMAS; public electric car charging points; Certified energy management system in accordance with ISO 50001


Axel Günter / Commercial Manager
Hartmut Kübler / Technical Manager BAK I
Oliver Kässer / Technical Manager BAK II

Tel.: +49 (0) 7484 / 9325-0
E-mail: bak-info(at)


BAK Boysen Abgaskomponenten GmbH & Co. KG
Albblickstraße 3-5
72226 Simmersfeld