Wulf Johannsen

What Wulf Johannsen does

Wulf Johannsen KG GmbH & Co. is a fourth-generation, family-owned industrial service company headquartered in Kiel, Germany, founded in 1932 and operating under the ownership of the Storm family (Jan-Willem Storm and Bernard Storm) as part of the STORM-Gruppe. The company specializes in the repair, maintenance, and reconditioning of diesel and gas combustion engines up to 8,000 kW, serving operators across marine and shipping, construction and agricultural machinery (the primary vertical), railway, wind turbines, stationary energy, and general industrial machinery. With 70 employees, the firm operates a hybrid model combining in-shop overhauls with on-site field service dispatched to vessels, plant sites, and remote industrial locations across the North Sea, Baltic Sea, and broader European waterways.

Core technical capabilities include cold gas coating (kinetic metallization), wire flame spraying, and precision component reconditioning methods — re-shafting, re-babbitting, crankshaft grinding, and cylinder head reconditioning. The company is an authorized engine service partner for CLAAS (agricultural and construction machinery) and has maintained a multi-decade partnership with ALLWEILER for pump servicing. The business model is project-based industrial services revenue, with pricing structured around scope of overhaul and field service deployment; recent commercial diversification includes the STORM•Eye AI-supported remote monitoring product and a partnership with NAEXT GmbH in industrial battery storage.

Recent strategic activity has emphasized capability expansion and energy-transition positioning. A 280.28 kWp photovoltaic installation supports in-house energy self-sufficiency, while STORM•Eye extends the service portfolio into predictive maintenance and recurring remote-monitoring revenue. Capacity expansion in cold gas coating enables parallel processing alongside wire flame spraying, and the firm's continued presence at SMM Hamburg 2026 signals sustained investment in the marine customer segment. The combination of 92 years of operating history, niche technical expertise in large-engine reconditioning, and recent digital and energy-infrastructure extensions positions Wulf Johannsen as a specialized Mittelstand service provider executing incremental capability expansion rather than scale-driven growth.

Name

Wulf Johannsen

Legal name

Wulf Johannsen KG GmbH & Co.

Website

https://wulf-johannsen.de

Company type

Private

Founded year

1932

Operating status

Operating

Headcount range

51–100 employees

Short description

Wulf Johannsen KG GmbH & Co. is a Kiel-based, fourth-generation family-owned industrial service company (founded 1932, 70 employees) specializing in repair, maintenance, and reconditioning of diesel and gas combustion engines up to 8,000 kW for marine, agricultural, railway, wind, and industrial machinery operators.

Ownership category

akta.pro rank

Product category

Engine Repair and Maintenance Services

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Metalworking Machinery Manufacturing (3335)

SIC

Engines & Turbines (3510), Metalworkg Machinery & Equipment (3540)

akta.pro primary industry

Cylinder Heads, Blocks & Rotating Assemblies Machining/Rebuild Services (TLAKALAG)

Keywords

• Engine repair services
• Diesel engine maintenance
• Gas engine services
• Combustion engine reconditioning
• Industrial spare parts

Headquarters

HQ city

Kiel

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Supply Chain

Revenue model

1. Engine Repair and Maintenance Services: Core revenue from inspection, maintenance, repair, optimization, and servicing of diesel and gas engines, including on-site and workshop-based work. Services follow the quality guidelines of Gütergemeinschaft der Motoreninstandsetzungsbetriebe e.V.
2. Spare Parts, Replacement Engines and Pumps Sales: Sale of spare parts, wear parts, replacement parts, new components, exchange parts, and pumps through the IQ-PARTS® branded service. Includes turbochargers, hydraulic fittings, and certified equivalent or alternative parts. Old parts can be traded in.
3. Mechanical Fabrication and Processing: Reconditioning of engine components using precision machining, cold gas coating, and wire flame spraying (METCO process). Components such as cylinder heads and engine blocks are rebuilt for large motors.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Core offering

Wulf Johannsen is a service provider for combustion engines (diesel and gas) with power ratings up to 8,000 kW, offering inspection, maintenance, repair, optimization, reconditioning, and spare parts supply. Core work is carried out both at the Kiel workshop (precision machining, cold gas coating, engine testing) and on-site at customer locations worldwide, with 24/7 hotline support and worldwide spare parts delivery via the IQ-PARTS® branded service.

Product overview

Wulf Johannsen is a fourth-generation family-owned service company (established 1932) specializing in engine maintenance, repair, and optimization services for combustion engines (diesel and gas) with power ratings up to 8,000 kW. The company operates as a service provider rather than a product manufacturer, offering a portfolio of integrated services including Gas Engine Services, Diesel Engine Services, Small Engine Services, Mechanical Fabrication and Processing (including cold gas coating and wire flame spraying), Hydraulics, and the IQ-PARTS® branded spare parts service. The company also distributes industrial battery storage solutions in partnership with NAEXT GmbH and offers the STORM•Eye digital remote monitoring service. Key industries served include stationary energy systems, marine and shipping, railway, construction and agricultural machinery, wind turbines, and industrial machinery.

Differentiator

Problem solved

Functional benefit

Brands

• IQ-PARTS®: Spare parts service offering fast and secure worldwide delivery of maintenance kits and spare parts including pumps, turbochargers, and hydraulic fittings.
• STORM•Eye

Products and services

• IQ-PARTS® Spare Parts Service Branded spare parts service providing fast and secure worldwide delivery of maintenance kits, spare parts, pumps, turbochargers, hydraulic fittings, and other engine components, with exchange-parts and old-part trade-in options.
• Gas Engine Services Inspection, maintenance, repair, optimization, and servicing of stationary gas combustion engines used in combined heat and power (CHP) units and biogas solutions, for operators of stationary and decentralised energy systems.
• Diesel Engine Services Maintenance, repair, optimization and servicing of diesel combustion engines for mobile applications including marine propulsion and railway locomotives.
• Small Engine Services Engine repair, spare parts and maintenance services for small engines used in construction and agricultural machinery, delivered as an authorized engine partner of CLAAS for CLAAS agricultural equipment.
• Mechanical Fabrication and Processing Reconditioning of engine components including complex cylinder heads and engine blocks for large engines, using precision machining, cold gas coating (Kaltgasbeschichtung) and wire flame spraying (METCO) to repair wear and corrosion damage without compromising structural integrity.
• Hydraulics Services Hydraulic services covering connectors, adapters, and hydraulic connections used in engines and machinery, supporting the broader engine service portfolio.
• Replacement Engines and Pumps Sale of replacement engines, pumps and related components for various engine applications, including exchange parts and old-part trade-in.
• Machine Shop Services Comprehensive machine shop capabilities for engine component machining and fabrication, supporting the firm's repair, maintenance and reconditioning work.
• STORM•Eye Remote Service System Remote service system with AI-supported analysis of operating data that enables precise maintenance planning and damage prevention for maximum availability and efficiency of monitored engines and components.

Quantifiable outcome

• 400+ engines worked on in 2024
• +2 more outcomes

Named customers1 record

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• STORM-Gruppe (Sister Companies)coreStrategic or Co-development Partner · 1 September 2024Wulf Johannsen operates as part of the STORM-Gruppe alongside sister companies, sharing resources, certifications (ISO 9001, 14001, 50001, SCC**), and a combined service offering. At SMM Hamburg 2024 and 2026, the company exhibits together with STORM-Gruppe partners, presenting tailored drive concepts including EU Stage V motors, hybrid drives, fully electric drives, system digitisation, and predictive maintenance.
• CLAAScoreChannel Partner/ Reseller/ DistributorWulf Johannsen is an authorized engine partner of CLAAS, offering comprehensive services for engines and components used in CLAAS agricultural machinery. The partnership provides a complete range of maintenance, repair, and spare parts services specifically for CLAAS equipment.
• ALLWEILER (AxFlow Group)coreChannel Partner/ Reseller/ DistributorWulf Johannsen is an authorized sales and service partner for ALLWEILER pump technology. The company has been certified as a service partner for over 20 years. Services include pump repair with collection service, qualified on-site assembly service, and original spare parts supply.
• SOLprime Power Systems GmbHminorImplementation/ SI/ Consulting PartnerCollaboration on the installation of a 1,400 m² photovoltaic generator system on the rooftops of Wulf Johannsen's production and administrative buildings in 2023, with a capacity of 280.28 kWp.
• Kieler SpendenparlamentminorOthersWulf Johannsen supports the Kieler Spendenparlament (Kiel Donations Parliament), a local charitable platform that funds social projects in Kiel and surrounding area for socially disadvantaged people. The company donated 2,000 euros in the context of its 90th anniversary, with employees contributing to the donation.

Scale indicators8 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Rolls-Royce Power Systems (MTU): Large OEM of diesel and gas engines for marine, rail, power generation, and industrial markets, with an extensive global service network. Highly comparable as a benchmark for service scope and reach in the same end-markets Wulf Johannsen serves, though at substantially larger scale and as a manufacturer rather than independent service specialist.
• MAN Energy Solutions: Global manufacturer of large diesel and gas engines for marine, power, and industrial applications, with PrimeServ aftermarket network. Operates across the same engine categories Wulf Johannsen services (including large two-stroke marine and four-stroke power plant engines) but at full-OEM scale.
• Caterpillar Marine Power: Manufacturer of marine and industrial diesel/gas engines under the Cat and MaK brands with global dealer service network. Overlaps with Wulf Johannsen's marine and industrial engine service scope, though Caterpillar delivers service through its dealer channel (e.g., Zeppelin) rather than as an independent workshop specialist.
• Scania Industrial & Marine Engines: Global manufacturer of diesel engines for marine, industrial, and power generation applications with an established service partner network. Comparable engine types (mid-speed diesel) and overlapping service-partner economics in marine and industrial segments.

Direct peers

• Wärtsilä: Provider of marine and energy engine technology and lifecycle services, including maintenance, repair, and overhaul of large engines and CHP installations. Closely comparable to Wulf Johannsen in maritime and stationary energy service, with a much larger installed-base footprint.
• DEUTZ AG: Independent manufacturer of diesel and gas engines for construction equipment, agricultural machinery, automotive, and stationary applications, with a service partner network. Comparable engine categories and end-markets (construction, agriculture, stationary power) to those served by Wulf Johannsen, with overlapping service requirements.
• Anglo Belgian Corporation (ABC): Belgian manufacturer of medium-speed diesel and dual-fuel engines for marine, power generation, and rail, offering service and spare parts. Directly comparable in engine class, customer segments (marine, rail, CHP), and service-oriented business model.

Emerging players

• Heinen & Hopman: Dutch-based service provider for marine engine and system maintenance with global reach across ports. Comparable as an independent maritime engine service specialist competing for similar ship-owner and yard work in the same North Sea/Baltic region.

Others

• Zeppelin (Caterpillar dealer): Authorized Cat dealer providing sales, rental, and service for construction and industrial machinery across Germany and beyond. Adjacent as a competitor for construction and agricultural equipment service work and as an authorized OEM service channel.
• STORM-Gruppe sister companies: Affiliated industrial service companies that share certifications and trade-show presence with Wulf Johannsen and present combined drive and digital service offerings at SMM Hamburg. Closely related ecosystem participants, co-marketed rather than direct competitors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

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Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wulf Johannsen