About us

6090 M&H Engineering

M&H Engines, Marine and Hazardous Engines

Our commitment is to develop products that not only meet but also exceed the very latest stringent worldwide emission standards.  

All the Marine and Hazardous engines are designed and developed by a team of people who have significant experience in diesel engines themselves. This team is made up by a group of people who have experience not only in design and engineering, but in product application, market sector demands, service, and support.

Our marine range of products are designed and developed not only with the latest emission standards in mind but also to the various applications the engines may be used in.

Whether for propulsion or auxiliary power, including gen sets and variable speed gen sets, all our products are designed to give optimum service whilst meeting all the strict safety and emission standards.

Our hazardous range of products are designed and developed to the latest emission standards, whilst at the same time meeting the extremely strict worldwide safety standards that are required for installation in areas such as oil and gas and anywhere a hazard such as an explosive atmosphere could be present. The engines are designed as a complete system and include all the relevant components to enable the customer to complete their package easily.

Warranty, Service & Support


All M&H Engines come with a three-year warranty as standard.

Warranty conditions are – one-year unlimited hours, three years total 5,000 hours maximum.

An extended warranty is available at an extra cost for an additional two years.

Service and support

We provide the following services:

  • Emergency on-site repairs
  • Engine overhauls and re-builds
  • Parts supply (and fitting if necessary)
  • Servicing and planned maintenance

Emergency on-site repairs

We are fully mobile and cover the whole of the UK and Ireland. Through our partners we also provide Worldwide coverage to support our customers and OEMs and also. Please contact us for further information.

Servicing and Planned Maintenance

For planned maintenance, please contact us.

A well-planned servicing routine is important to keeping today’s engines in working order.  The better the servicing the longer the working life of the engine. We recommend that Genuine Parts and Lubricants are used as they are designed to protect the engine and get the maximum performance from the engine.  The recommended service interval should be followed and should never be extended.

If you have any questions on maintenance, servicing, filters, fuel/water separators, oils or coolants, please contact us and we will do our best to help you out.

If you operate a fleet, contact us about box or bulk quantities of filters.

Service and support contracts are available for the warranty period and beyond. Service and support from our expanded service dealer team ensure prime operation of your engine and long service life.

Remote Monitoring

We take support to the next level and are proactive in keeping your vessel operational.