Cummins Engine Specialist

South of England
and Beyond


Commercial Marine

Prompt, professional support with minimal downtime.


Pleasure Marine

Engineering confidence delivering peace of mind.


Power Generation

Providing stakeholder confidence in your power generation systems.

What We Do



We are fully supported by multiple Cummins Main Dealers and have access to all the support resources you may require to assess, specify, procure and deliver all your CUMMINS and ONAN requirements. We can offer highly competitive pricing and the best lead times in the country.



When embarking on a re-power project installation, it is not necessarily a straightforward replacement exercise. We have access to all the facilities needed to enable any re-engineering or modifications, ensuring minimal disruption or downtime.



Seasonal Maintenance is an important part of your boat ownership. Winterisation is often overlooked, but it is a vital part in ensuring your boat is protected from the cold temperatures. This service is personalised to your requirements and will also be influenced by whether you are using your boat through the winter or putting it into storage.



It is vital to follow the manufacturers service schedules and consumables to ensure any warranty claims will be honoured and to maximise the life of your engine. Sacrificial Anodes are constantly eroding and should be replaced at the correct service intervals even if your engine hours are low. Failure to do so can cause irreparable damage to coolers and heat exchangers.



We are fully equipped with the latest Cummins and MerCruiser diagnostic software. This enables us to monitor all engine parameters in real time, diagnose faults and clear active codes. We also have access to ‘Cummins Quickserve’ for online access to all engine manuals and wiring diagrams. We are proud of our reputation for accurate, efficient, diagnostics leading to first-time fix with minimal downtime and costs.


Fault Resolution

With almost 20 years’ experience working on Cummins engines, we are highly respected in the industry for accurate diagnosis and remediation of faults. These proven skills result in an avoidance of ‘suck it and see’ exercises, reducing downtime and saving the costs that arise from lengthy iterative fault elimination. David Vasey is often the preferred primary contact within the industry for those ‘challenging’ problems.


Cummins Engines

Cummins Onan Generators

Cummins Engine Parts

Our Clients


Vasey Engineering were highly recommended to us; Dave and the team certainly did not disappoint!

We have enjoyed exceptional service at a fair price ever since. For me, what makes Vasey Engineering stand out from their competition is the personalised service that customers receive. I have called them many times, often at night, to ask a question or report an issue and, on each occasion, the response has been swift and accurate.

Stephen Long OBEJanuary 2021

Vasey Engineering have undertaken all our servicing and maintenance requirements and I have complete trust in the quality of the work. But the level of service that we have received over the years from Vasey Engineering goes way beyond that.

Fantastic service and I have no hesitation in thoroughly recommending Vasey Engineering.

Stephen Long OBEJanuary 2021

David has serviced and meticulously maintained my charter boat's Cummins QSD engines and Bravo 3 outdrives since I bought it back in 2015. I was delighted when he set up Vasey Engineering and I am enjoying watching his business go from strength to strength. Vasey Engineering's expertise, skill and knowledge is unrivalled. They somehow manage to juggle a substantial and varied workload from an impressive, diverse customer base so as to provide a quick, affordable and easy solution to any problems or issues that might crop up.

Zen Dog ChartersApril 2021

It is very reassuring to know that whenever I need routine servicing, breakdown repairs, part sourcing or just advice over the phone, they will always be on hand to quickly provide a solution. I've had experience of other contractors that just make excuses. Vasey Engineering just make things work! Thoroughly recommended!

Mike GriffithsApril 2021

This was my first experience with a Cummins engine and so it was enormously reassuring to have such an expert on board for the first service. Dave showed me around all the peripherals and we talked about what to expect from the engine – total reliability.
I am looking forward to a trouble free season and will be back in touch for the next service.

Colin Hall, Swift Trawler 35April 2021

Would you like to discuss our services?

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