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Diesel Generator Suppliers

Marine diesel generators are the backbone of onboard electrical systems, supplying steady and reliable power to support everything from navigation equipment and communication systems to lighting, refrigeration, and emergency gear. On larger vessels and offshore platforms, they serve as the primary or backup power source, ensuring operations remain functional in all conditions.

Most of these units come with a few main parts: a diesel engine, alternator, fuel and cooling systems, and a control panel. They’re built to handle long hours and tough marine environments. A failure out at sea isn’t just inconvenient - it can put lives and cargo at risk, and lead to serious compliance issues.

That’s why it’s essential to have the right partner when sourcing generators. Our team at Records Marine helps connect buyers with diesel generator suppliers for marine use, from specialized distributors to well-known marine diesel generator manufacturers. Whether you're replacing one unit or looking to equip an entire fleet, we make it easier to find dependable power solutions that match your vessel's needs.

Types & Applications of Marine Diesel Generators

Marine vessels rely on different types of diesel generators depending on their size, purpose, and onboard power demands. Not every genset is built the same, and matching the right design to the vessel’s operational profile can make a big difference in fuel efficiency and equipment longevity.

Smaller boats, for example, often use compact auxiliary generators to run lights, pumps, and electronics. In contrast, cargo ships or offshore platforms require heavy-duty main generators capable of supporting high electrical loads around the clock. There are also emergency marine generators that kick in automatically during a power failure - an essential layer of safety for vessels operating far from shore.

Some models are air-cooled and simple to maintain, while others come water-cooled and built for high endurance. Power output, noise levels, fuel consumption, and compliance with marine emission regulations all play a role in the selection process.

At Records Marine, we’ve organized a global directory of marine diesel generator suppliers to help professionals compare options and choose the most suitable unit - whether it’s for a leisure yacht or an offshore supply vessel.

Prominent Marine Diesel Generator Brands

When reliable power matters most, a few names keep showing up in engine rooms around the world. These top marine diesel generators brands have earned their place through years of steady performance and trusted engineering.

  1. MAN B&W units are often found on larger vessels, where durability and high-load capacity are essential. As one of the leading diesel generators manufacturers, their systems are known for solid build quality and long-term reliability at sea.
  2. Yanmar caters more to small and mid-sized vessels. These compact generators are easy to maintain, fuel-efficient, and backed by a wide service network, making them a favorite for coastal operators.
  3. Daihatsu offers dependable mid-range gensets. Their equipment is appreciated for its smooth running, lower vibration, and consistent performance under changing loads.
  4. Caterpillar, while not always seen on every ship, has a strong presence in offshore and support vessels. Their marine models combine flexible configuration options with broad global support.

Finding a well-known brand ensures easier access to spares, with most diesel generator parts suppliers stocking compatible components.

What to Look for in a Marine Diesel Generator Supplier

Choosing the right supplier goes beyond comparing prices - it’s about ensuring long-term performance, reliability, and support. Here are the key factors to consider:

  • Wide Range of Gensets - A good supplier should offer various power ratings, voltages, and brands to match different vessel types and onboard systems.
  • Technical Guidance - Suppliers with real marine expertise can help you choose a unit that fits your load profile, regulatory needs, and future upgrades.
  • Verified Certifications - Look for suppliers working with class-approved equipment and compliance-ready models. 
  • Warranty & Service Contracts - Reliable suppliers offer clear warranty terms and extended service agreements, giving peace of mind and protection against unexpected failures.
  • Global Logistics Reach - Access to major ports, spare stock in key locations, and on-time delivery help reduce unplanned delays.
  • Reputation and References - Proven track record, client testimonials, and years in the industry build trust in their reliability.

Market for Used & Refurbished Marine Diesel Generators

For some operators, used marine diesel generators offer a cost-effective solution, especially when dealing with older vessels or tight budgets. Refurbished marine diesel generators, when sourced from reputable vendors, can perform reliably for years with proper maintenance.

When assessing used marine diesel generators, it’s wise to go beyond visual checks. Ask for detailed performance test results. Also review temperature and pressure data across different load levels, and ensure proper alignment checks have been carried out. The more documentation you have, the easier it is to gauge how well the genset was maintained and whether it’s fit for your application.

Working with trusted suppliers helps ensure transparency and access to support. Many established distributors also offer limited warranties on refurbished units - giving buyers added confidence without the full cost of new equipment.

Partnering with the Right Marine Diesel Generator Company

Reliable power generation at sea requires trusted partners who offer quality products, strong technical backing, and consistent service across regions. At Records Marine, we make it easier to find marine diesel generator suppliers that meet your specific needs. Whether you're sourcing for a new build or replacing an aging unit, our network includes vetted professionals who understand maritime demands. Explore suppliers, compare offerings, and ensure your vessel is powered by systems that deliver efficiency, reliability, and compliance - voyage after voyage.

Company Asia Pacific Ship Supply Limited logo

Verified

Year Founded: 2011

Asia Pacific Ship Supply Limited

APS SPARE PARTS SUPPLER SHIP SPARE PARTS SUPPLIER YANMAREY18/EY22/N18/N21 PISTON RINGS NOZZLE IN STOCK BW S42MC S50MC-C 60MC-C PISTON RINGS NOZZLE IN STOCK BW S35/42/50/60MC/MC-C PISTON RINGS NOZZLE IN STOCK S50/60MC/ME-C PISTON RINGS NOZZLE IN STOCK



sales@asia-shipsupply.com


Company MYTHMAR MARINE DANISMANLIK TIC. LTD. STI logo

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Year Founded: 2018

MYTHMAR MARINE as a spare parts broker has the knowledge and power to serve you well by providing all types of spare parts genuine, under license or O.E.M. in cooperation with our affiliated companies at competitive prices. We can provide you with new spare parts from Europe Poland, U.K., Denmark, Germany, etc., Japan, Korea, China, as well as used spare parts from India and Singapore, with warehouses in Greece, India, Bangladesh and China for second hand spares. We can negotiate prices and payment terms and delivery as manufacturers rely on our purchase and in our orders.


Company Qingdao Thundsea Marine Technology logo

Verified

Year Founded: 2018

Specializing in the maritime electronics industry and professional fiber optic compass manufacturer Providing professional services and selling all kinds of marine electronic products.We provides one-stop service including technical consultation, system design, equipment sales, installation and commissioning, maintenance. We have implemented the ISO9001 quality management system, which can provide customers with the highest quality service standards. There are a wide variety of products, and the agent cooperates with the worlds major brand-name products. These include: radio communication, satellite communication, internal communication, rescue, navigation, weather, comprehensive, entertainment, fishery, other and engine room automation control and alarm system. The products can be applied to new building ships, refurbished ships, fishing boats, inland river boats and yachts, etc.


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Year Founded: 2002

Our offerings include but not limit: Deck Stores: Various valves and pumps, air vent heads, fire monitor, mooring wire and ropes, hatch cover spare parts, fire door and windows, cabin stores, food and etc. Engine stores: Main and auxiliary engine spares parts, fresh water generator spares parts, air cooler, condenser, heater, air compressor, sewage treatment systems, vacuum toilets, oil-water separators and etc. Electrical stores: Various electrical brands, solenoid valve, pressure transmitter, ceiling lights and etc. Everything you need, please contact us, and we will do our best to supply and offer the best price. PIC: HUANG GANG E MAIL: zysss@vip.sina.com


Company Universe Shipping and Trade Links logo

Year Founded: 1995

We deal in supplies of marine engine parts, marine Equipments, Marine air compressors, HVAC compressor spare parts, Pumps, Turbochargers, Hydraulic motors and pumps, Freshwater Gensets, Purifiers, Governors, Navigation and Safety Equipments, Lashing Materials and Marine Ropes, Bridge Equipments, Ships Horns, Ships Stores, Anchor and Anchor chains, Mechanical Seals, Valves etc., We can supply air compressor complete and spare parts for following: - Air Compressors Hatlapa, Hamworthy, Tanabe, Sperre, JP Sauer Sohn.etc.. - Refrigeration Compressors like, Daikin, Carrier, Carlyle, Grasso, Sabroe, Bock, Bitzer, York.. - Spare parts and equipment for diesel engines, purifiers, compressors, pumps, turbochargers and filters - Pump Mechanical Seals, Maintenances Chemicals, Tank Cleaning Chemicals, Water based Eco Chemicals, Cooling Water Treatment, Boiler Water Treatment, Evaporator Treatment, Fuel Oil Treatment, Ships Stores, Deck Item, Test Kits etc.,


Company Zava Marine Corporation logo

Year Founded: 2022

Expert manufacturers of industrial equipment and spare parts, delivering precision-engineered, durable solutions for machinery, automotive, aerospace, and heavy industries. Custom fabrication, OEM/aftermarket parts, and global supply chain support


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Year Founded: 1984

With over 35 years of experience, Zainab Trading sources and delivers a wide range of ship machinery and auxiliary systems,carefully inspected and ready for deployment across commercial fleets.


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Year Founded: 2000

With over 15 years of experience in the marine power sector, SNG Power supplies generator sets and propulsion engines tailored for critical vessel operations. Units are held in stock and available for prompt delivery worldwide.


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Year Founded: 2007

With access to refurbished and tested equipment, Armaan Enterprises supplies marine systems that meet vessel needs efficiently. Their support ensures both safety and performance across a range of ship operations.


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Year Founded: 2023

They provide life-saving appliances that are certified and with vessels name, each backed by the latest class approvals. When safety matters, they don’t cut corners - every item is ship-ready and fully documented.