PB Asher

What PB Asher does

PB Asher is a third-generation, family-owned marine diesel engine services specialist headquartered in Southampton, United Kingdom, operating since 1948. The company delivers end-to-end diesel engine services — including engine overhauls (2-stroke and 4-stroke), fuel injection servicing, governor repair and calibration, hydraulic system support, and global onboard/on-site field engineering — to shipowners, fleet operators, power-generation companies, offshore operators, defence, and cruise operators, supported by four regional/operational locations (Southampton HQ, Chandlers Ford registered office, Cork, and Rotterdam) and deployment reach across 30+ countries. The technical backbone consists of in-house workshop facilities, three Woodward test benches for governor calibration, proprietary field reporting software, and a PB Asher DropBox remote-diagnostics system, with all engineering delivered by employed staff rather than subcontractors. Revenue is generated through a combination of professional services (overhauls, field engineering, fuel injection, governor work) and OEM-authorised parts distribution under authorised distributor and service agent relationships with Bosch, Woodward L'Orange, Bosch Rexroth, and Prestolite, with PB Asher holding sole UK distribution rights for genuine L'Orange parts. Go-to-market is direct enterprise field sales supplemented by inside sales account management from Southampton, quotation-based pricing, ISO 9001:2015 certification through Lloyd's Register, and IMO/NOX compliance documentation, targeting an even split across commercial shipping, power generation, and offshore as primary verticals with defence, cruise, and industrial as secondary segments.

Name

PB Asher

Legal name

P B ASHER DIESEL INJECTION ENGINEERS LIMITED

Website

https://pbasher.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

11–50 employees

Short description

PB Asher is a third-generation, family-owned marine diesel engine services specialist founded in 1948, providing engine overhauls, fuel injection, governor repair, and global field engineering to shipowners, power-generation operators, and offshore/defence clients under OEM-authorised distributor relationships with Bosch, Woodward L'Orange, Bosch Rexroth, and Prestolite.

Ownership category

akta.pro rank

Product category

Marine Diesel Engine Services

SIC

Oil & Gas Field Machinery & Equipment (3533)

akta.pro primary industry

Personal Watercraft (PWC/Jet Ski) Manufacturing (IMAJAEAF)

Keywords

• Marine diesel engine services
• Fuel injection services
• Engine overhaul services
• Governor calibration repair
• OEM marine spare parts

Headquarters

HQ city

Southampton

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Spare Parts Supply: Supply of OEM-authorised spare parts for marine and power diesel engines, sourced through authorised supply chains. Parts include cylinder heads, valves, pistons, bearings, crankshafts, fuel injection components, governors, and hydraulic systems from manufacturers including Bosch, Woodward L'Orange, Bosch Rexroth, and Prestolite. Revenue is generated on a per-transaction basis with pricing per quotation.
2. Engine Services (Overhaul, Maintenance & Repair): Full-scope engine maintenance, overhauls, and diagnostics for 2-stroke and 4-stroke marine and power engines. Services include major/top-end overhauls, fuel pump and injector servicing, governor services, and emergency repairs. Delivered by in-house engineers both in workshop and at client sites globally.
3. Workshop Services: Comprehensive workshop facilities for overhaul of diesel engine components including cylinder heads, liners, connecting rods, pistons, and engine-driven pumps. Includes governor overhaul and testing, in-house machining, and component refurbishment.
4. Fuel Injection Services: Expert fuel injection servicing with OEM parts and IMO/NOX compliant solutions. Services include fuel pump and injector overhauls, spindle guides, non-return valves, injector nozzles, and fuel pump barrels and plungers. Fast turnaround with service exchange options.
5. Governor Services: Dedicated governor servicing including calibration, overhaul, and exchange, with extensive exchange stock to reduce downtime. Includes onboard governor services for fault finding, removal, replacement, and comprehensive overhaul worldwide.
6. Onboard/On-Site Field Engineering: Global field engineering services for vessels worldwide, including major overhauls, crankshaft renewals, emergency repairs, diagnostics, and planned maintenance. Engineers deployed from Southampton and regional hubs with full project oversight and reporting.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

PB Asher is a specialist provider of marine and power diesel engine repair, maintenance, and overhaul services, along with authorised OEM spare parts distribution. The company delivers in-house workshop services, fuel injection servicing, governor repair and calibration, and global onboard/on-site field engineering for commercial shipping, power generation, offshore, defence, and cruise operators.

Product overview

PB Asher offers a unified diesel engine services operation combining in-house engineering capabilities with authorized parts distribution. The integrated portfolio spans five core service lines—Engine Services, Workshop Services, Fuel Injection Services, Governor Services, and Onboard Field Services—alongside an authorized parts distribution business for Prestolite, Woodward L'Orange, Bosch, and Bosch Rexroth products. The company operates from UK and European hubs (Southampton and Rotterdam) deploying skilled engineers worldwide for both workshop-based and onboard vessel interventions, supported by a large stock of OEM spare parts and exchange units.

Differentiator

Problem solved

Functional benefit

Products and services

• Engine Services Comprehensive diesel engine overhaul and maintenance services for 2-stroke and 4-stroke marine and power engines, including major overhauls, fuel pump and injector work, emergency repairs, and planned maintenance. Targeted at shipowners, fleet operators, and power generation companies.
• Workshop Services In-house workshop facilities for cylinder head overhauls, liner honing, con-rod refurbishment, piston refurbishment, engine-driven pumps, governor testing, and general machining operations for marine and industrial diesel engine components.
• Fuel Injection Services
• Governor Services
• Onboard Field Services
• OEM Spare Parts Supply
• Woodward L'Orange Fuel Injection Parts
• Bosch Fuel Injection Parts
• Bosch Rexroth Marine Hydraulic Parts
• Prestolite Hydraulic Starter Systems

Quantifiable outcome

• Over 100 major and top-end engine overhauls completed across 20+ countries
• +3 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core.

• Bosch Large EnginecoreChannel Partner/ Reseller/ DistributorPB Asher is an authorised distributor and service agent for Bosch large-engine fuel injection systems. Supplies genuine Bosch parts including injection pumps, high-pressure fuel rails, control valves, common-rail injectors, and sealing/service kits for marine and power applications including Wärtsilä WL20/WL26, MAK M25, MTU 2000 series, Cummins QSK, and Daihatsu engines.
• Woodward L'OrangecoreChannel Partner/ Reseller/ DistributorPB Asher is an authorised distributor for Woodward L'Orange precision fuel injection systems for large diesel and dual-fuel engines. Supplies fuel injection pumps, pump elements, nozzles, injectors, FIVA valves, and pressure-control valves. PB Asher is also the only authorised UK distributor of genuine L'Orange parts.
• Bosch RexrothcoreChannel Partner/ Reseller/ DistributorPB Asher partners with Bosch Rexroth to deliver and service hydraulic pumps, motors, and control systems for marine and power industries. Provides fast, compliant overhaul and repair services including axial-piston pumps, servo valves, hydraulic power units, control blocks, and system diagnostics in line with OEM specifications.
• Prestolite ElectriccoreChannel Partner/ Reseller/ DistributorPB Asher is an authorised distributor for Prestolite Hydraulic Starter Systems and Handraulic kits. Supplies and supports the full range including B35G8 and B50G35 hydraulic starter systems, with genuine OEM parts sourced directly from Prestolite Europe and global dispatch capability.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Deutz AG: Deutz AG is a manufacturer of diesel engines with an authorised service and distribution network across marine, industrial, and power applications. Comparable in authorised-service-partner business model and customer overlap, though Deutz is also an OEM.
• Cummins: Cummins is a global manufacturer of diesel engines including the QSK marine platform referenced in PB Asher's Bosch-authorised distribution catalogue. Comparable as both supply engine service and parts support, though Cummins is also an OEM.
• Rolls-Royce Power Systems (MTU): Rolls-Royce Power Systems, operating under the MTU brand, manufactures marine engines and provides global service. Directly comparable for marine diesel engine services and parts distribution, particularly for MTU 2000 series engines that PB Asher services.
• Volvo Penta: Volvo Penta is a major marine engine OEM with its own global service network. PB Asher's customer testimonials reference Volvo Penta injector reconditioning, and the engines are within PB Asher's workshop scope, making Volvo Penta a directly comparable peer in marine diesel service.
• Wärtsilä: Wärtsilä is a major marine engine manufacturer with a global service network spanning lifecycle services, field engineering, and parts distribution. Directly comparable to PB Asher as both serve marine diesel engine customers with maintenance, repair, and parts; however, Wärtsilä is also an engine OEM, making it a far larger incumbent with broader portfolio.
• MAN Energy Solutions: MAN Energy Solutions is a leading manufacturer of large marine diesel engines (the very brand PB Asher became an authorised dealer for in 1970) with comprehensive global service operations under its PrimeServ brand. Highly comparable as both deliver overhaul, parts, and field services, though MAN is also the engine OEM.
• Caterpillar Marine Power: Caterpillar's marine division provides engines and global service support for commercial marine applications, including the Cummins QSK and other platforms PB Asher services. Comparable for engine maintenance, parts supply, and field service offerings, though at vastly larger scale.

Others

• Alfa Laval: Alfa Laval supplies marine equipment and services including engine-room separation, heat transfer, and fuel-treatment equipment with an extensive global service network. Adjacent rather than directly competitive, but addresses similar marine customers with overlapping service infrastructure.
• Kongsberg Maritime: Kongsberg Maritime is a global marine technology provider with service operations across propulsion, engine-room systems, and digital fleet management. Adjacent rather than directly competitive, but serves similar enterprise shipping customers with overlapping field-service capability.

Direct peers

• Bergen Engines: Bergen Engines is a Norwegian manufacturer and servicer of medium-speed diesel and gas engines for marine and power applications. Comparable in size, scope, and customer base to PB Asher for marine and power-generation engine services, with similar workshop-and-field model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/dieselspecialist
• LinkedInlinkedin.com/company/pb-asher
• Instagraminstagram.com/pb_asher
• Xx.com/pbasher

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

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 PB Asher