Das Firmengebäude unserer Motoreninstandsetzung für Kiel, Schleswig-Holstein und weltweit

Your Power
Drives Us.

Your professional OEM-independent service provider for combustion engines (diesel and gas) with a power range from 3 to 8.000 kW.
More power since 1932!

Service and maintenance up to general overhaul for different engines, on site or in our plant:

  • natural gas engines
  • biogas engines
  • landfill gas engines
  • sewage gas engines


Worldwide repair service (minor and major overhauls) for all 4 stroke diesel engines of:

  • sea going vessels and ships
  • locomotives, railway vehicles
  • farm machines, construction equipment
  • emergency generators
  • small engines


Machining and fabrication of machines and components. Worldwide service:

  • crankshaft grinding
  • mechanical machining of components
  • lineboring
  • manufacturing of slide bearings


Worldwide delivery of engines, components and spare parts for:

  • Industrial engines
  • Marine engines
  • emergency generators
  • pumps
  • spare parts and exchange parts



Are you ready for Fit for Flex?

Best Engine Quality and Service


Years of Experience

More than 85 years of business


Worldwide Service

24 hours daily, 7 days a week


Quality and Safety

Certified with DIN EN ISO 9001

Our service: 24 hours per day, 7 days a week.

Worldwide Engine Service

Get to know all about our services. Proven and certified quality for more performance.

service overview

Fields of Activities and Sectors

Get to know our fields of activities and sectors. Everywhere in the world.

Wulf Johannsen - A company with tradition since 1932

Since the cylinder and crankshaft grindery was founded by Wulf Johannsen in Kiel in 1932, a lot of things have changed. But one thing has remained the same for four generations: our enthusiasm for providing first-class services to our customers all over the world, combined with flexibility and reliability every single day. Because only satisfied costumers and high-quality services have made our success of the past 85 years possible.


Current News

Merry Christmas and a Happy New Year!

22.12.2021 11:31

Season's Greetings from the Wulf Johannsen team to all our customers and business partners

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Further milestones of our plant extension

23.08.2021 09:01

Approval of the building application and new power station as a groundwork for next steps

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Safe start with Wulf Johannsen

12.05.2021 08:53

New CHP plant with Jenbacher J416 is serviced from the very beginning

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Career at Wulf Johannsen

The extensive and proven quality of services for more than 80 years tells its own tale.

Go to "Jobs"

Downloads and Information

Here you can find PDFs and information about our services.

Go to "Downloads"

Wulf Johannsen's Engine Services

Wulf Johannsen KG GmbH & Co. stands for experience, quality and tradition. In Kiel, Northern Germany, and even worldwide a team of 70 people is working for the company's clients.

As an OEM-independent service provider for combustion engines (diesel and gas) with a power range from 3 to 8.000 kW, Wulf Johannsen KG GmbH & Co. offers a broad range of services. The company's four core areas are Diesel Engines, Gas Engines, Mechanical Fabrication, as well as Engines, Pumps and Spare Parts. Other ambits are stationary energy systems (CHPs and biogas plants), marine, construction machines, locomotives, special vehicles and industrial plants. To ensure a highly customer-oriented service, quality and safety awareness is the top priority in all divisions. Further qualities of Wulf Johannsen KG GmbH & Co. are many years of experience and specific professional expertise, like restoration and repair of turbochargers, production of bearings, and transmission overhaul of wind turbines.