Majnabbe

What Majnabbe does

Majnabbe Motor Diesel Service AB is a privately held Swedish supplier of premium spare parts for medium-speed diesel engines, headquartered in Kungälv and operating since its 1965 founding in Gothenburg. The company specializes in Wärtsilä (W20, W26, W32) and Nohab (F10, F20, F30, WN25) engines, and through its partnership with QuantiParts — a Wärtsilä-owned entity dedicated to classic engines — also distributes parts for legacy brands including Bolnes, Crepelle, Deutz, GMT, Poyaud, SACM, Stork Werkspoor, Sulzer, Vasa, and Wichmann. Majnabbe holds global NOHAB distribution rights and regional QuantiParts distribution rights across the Nordics and Baltics, with sourced components from Bosch, Miba, and Märkisches Werk and a 1,000 m² vertical storage facility holding up to 1,300 EUR pallets.

The business generates revenue through quote-based one-time spare-parts sales, complemented by workshop, field service, major overhaul, and tailor-made exchange-system services delivered through its sister company SWESERV. Pricing is not publicly disclosed; payment terms are 30 days from dispatch. Majnabbe operates a sales-led, relationship-driven go-to-market targeting marine and land-based engine operators globally, reaching 800+ customers across 40 active countries on a 15-person functional team. Operations are ISO 9001:2015 certified (SWEDAC-accredited) and the company carries no external investors, public listing, or M&A track record.

The economic model is a high-touch industrial aftermarket: small absolute scale (EUR 7M turnover, ~15 employees), OEM-blessed distribution rights, and bundling with sister-company field services create defensible positioning in a niche that is unattractive to large generalist distributors but durable so long as the legacy engine installed base remains in service.

Name

Majnabbe

Legal name

Majnabbe Motor Diesel Service AB

Website

https://majnabbe.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

11–50 employees

Short description

Majnabbe is a privately held Swedish supplier of premium spare parts and aftermarket services for legacy medium-speed diesel engines (Wärtsilä, Nohab, and other classic brands), serving 800+ marine and land-based operator customers across 40 countries.

Ownership category

akta.pro rank

Product category

Marine and Industrial Engine Spare Parts

akta.pro industry

PRIMARYTLAKAOAE

Powertrain, Engine & Drivetrain Parts Distribution (New/Reman)

Transportation & Logistics/Vehicle & Equipment Maintenance, Repair & Services (MRO)/Parts Distribution, Tools & Workshop Services (Aftermarket Support)

Keywords

• Marine engine spare parts
• Diesel engine components
• Medium speed engines
• Industrial engine parts
• Wärtsilä engine parts

Headquarters

HQ city

Kungälv

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Spare Parts Sales: Sale of premium spare parts for Wärtsilä and Nohab medium speed engines. Original parts sourced from QuantiParts and other European manufacturers including Bosch, Miba, and Märkisches Werk.
2. Workshop Services: Fully equipped workshop for service, overhaul or repair of engines and engine parts, performed by sister company SWESERV.
3. Field Service: Specialists on marine and land-based installations, offering comprehensive hands-on practice from most modern four stroke diesel engines.
4. Major Overhauls & Turn Key Solutions: Complete turn key solutions for major overhauls, repairs or re-engineering projects including planning, manpower, parts, and logistics.
5. Tailor Made Exchange Systems: Complete repair boxes stored on ships to save time, offered for selected engines (swing sets).

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Majnabbe supplies premium original spare parts for medium speed diesel engines, specializing in Wärtsilä (W20, W26, W32) and Nohab (F10/F20/F30/WN25) engine lines. Through its global distributor partnership with QuantiParts (a Wärtsilä company) and complementary sourcing from Bosch, Miba, and Märkisches Werk, the company delivers original parts to 800+ customers across 40 countries, complemented by workshop, field service, overhaul and tailor-made exchange system services delivered through sister company SWESERV.

Product overview

MAJNABBE is a Swedish company offering premium spare parts for medium speed engines, primarily focused on Nohab and Wärtsilä engines (W20, W26, W32). The company operates as QuantiParts' global distributor for NOHAB engines and regional distributor for classic Wärtsilä engines in Sweden, Denmark, Finland, Latvia, Lithuania, and Estonia. Their product portfolio consists of original spare parts for multiple engine brands supported through the QuantiParts partnership, complemented by a suite of services provided through their sister company SWESERV including workshop facilities, field service, major overhauls, tailor-made exchange systems, and technical support.

Differentiator

Problem solved

Functional benefit

Products and services

• Nohab Engine Spare Parts Original spare parts for classic Nohab engines including F10, F20, F30, and WN25 (F40) models, with configurations from 3 to 16 cylinders featuring 250mm bore and 300mm stroke. Targeted at marine and industrial operators of classic Nohab engines.
• Wärtsilä 20 Spare Parts Premium spare parts for Wärtsilä 20 engines with 200mm bore and 280mm stroke, supporting 4, 6, 8, and 9 cylinder configurations. For operators of classic Wärtsilä 20 medium speed diesel engines.
• Wärtsilä 26 Spare Parts Premium spare parts for Wärtsilä 26 engines with 260mm bore and 320mm stroke, supporting 6, 6, 9, 12, 16, and 18 cylinder configurations. For operators of Wärtsilä 26 medium speed diesel engines.
• Wärtsilä 32 Spare Parts Premium spare parts for Wärtsilä 32 engines with 320mm bore and 400mm stroke, supporting 6, 7, 8, 9, 12, 16, 18, and 20 cylinder configurations in A, B, C types. For operators of Wärtsilä 32 medium speed diesel engines.
• QuantiParts Classic Engine Spare Parts Original spare parts for classic Wärtsilä and other legacy medium speed engines distributed via the QuantiParts partnership, supporting multiple engine makes including Bolnes, Crepelle, Deutz KHD/MW, GMT, Poyaud, SACM, Stork Werkspoor Diesel, Sulzer A/S 4-stroke, Vasa 14/24, Vasa 22, and Wichmann. For operators of legacy medium speed diesel engines.
• Workshop Services Fully equipped workshop for service, overhaul or repair of engines and engine parts, operated by sister company SWESERV under ISO 9001:2015 quality assurance. For marine and industrial operators needing in-shop engine servicing.
• Field Service Specialists on marine and land-based installations providing comprehensive hands-on service for four-stroke diesel engines globally, delivered through sister company SWESERV. For operators needing on-site engine maintenance and repair.
• Overhauls & Turn Key Solutions Complete turnkey solutions for major overhauls, repairs, or re-engineering projects including planning, manpower, parts, and logistics. For ship owners, power plants, and industrial operators executing major engine overhaul projects.
• Tailor Made Exchange Systems Complete repair boxes ('swing sets') stored on ships for time-critical overhaul situations, containing all parts needed per cylinder unit. For vessel operators needing fast in-situ overhaul of selected engines.
• Technical Services Deep knowledge support for specific engines from experienced engineers, providing assistance for problems of various complexity. For operators needing expert troubleshooting on medium speed diesel engines.

Quantifiable outcome

• Delivering to 800+ customers in every corner of the earth
• +4 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Five partnerships are on record, tiered core and major.

• QuantiParts (Wärtsilä company)coreChannel Partner/ Reseller/ DistributorMajnabbe is appointed as QuantiParts global distributor for NOHAB-engines, and regional distributor of QuantiParts complete portfolio in Sweden, Denmark, Finland, Latvia, Lithuania and Estonia. QuantiParts is dedicated to support of classic Wärtsilä engines. This partnership provides access to factory support and original blueprints.
• SWESERVcoreStrategic or Co-development PartnerSister company providing fully equipped workshop, field service, major overhauls, and tailor made repair systems. SWESERV performs highly skilled and competitive services of diesel engines.
• BoschmajorTechnology or IntegrationLong-time partner providing spare parts for large engines with Bosch certified quality.
• MibamajorTechnology or IntegrationPreferred supplier of engine bearings for European engine manufacturers since decades.
• Märkisches Werk (MWH)majorTechnology or IntegrationDeveloping and producing cylinder head components for large-bore combustion engines.

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Hyundai Heavy Industries: Major shipbuilder that also manufactures HiMSEN medium-speed marine engines and supports an installed base through its own service network, addressing overlapping customers in commercial marine propulsion.
• Wärtsilä: OEM of medium-speed marine and industrial engines including the W20/W26/W32 platforms. Operates a global service network (Wärtsilä Services) that competes for the same engine parts and aftermarket spend Majnabbe targets.
• Caterpillar Marine: Supplies marine diesel engines and global parts/service support to commercial and offshore operators — competing for the same medium-speed engine aftermarket spend across marine and industrial installations.
• MAN Energy Solutions: One of the world's largest manufacturers of large-bore and medium-speed marine engines, operating a substantial global aftermarket parts and service network that overlaps with Majnabbe's customer base.
• Volvo Penta: Supplies marine and industrial engines with a global service and parts network. While focused on smaller-displacement engines, it competes for the same operator aftermarket wallet in many of the regions Majnabbe serves.

Direct peers

• Bergen Engines: Norwegian manufacturer of medium-speed diesel and gas engines for marine and industrial use, with a directly comparable legacy parts business serving its B/W-derived installed base. Closest continental-European analogue to Majnabbe's focus.
• QuantiParts: Wärtsilä-owned business dedicated to supporting classic Wärtsilä engines and supplier/distributor of the same engine platforms Majnabbe specialises in. Operates the same aftermarket parts business model and is also Majnabbe's principal partner.
• Anglo Belgian Corporation (ABC): Belgian manufacturer of medium-speed diesel and dual-fuel engines for marine, power, and industrial use, with an aftermarket parts operation for its own installed base — directly comparable scope and customer profile to Majnabbe.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Majnabbe-Engine-Parts-100067671014093
• LinkedInlinkedin.com/company/majnabbe

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Majnabbe