Diesel and gas engines for applications within the oil and gas, marine, renewables, power generation, mining, industrial and construction markets.

We can provide modern emission compliant engines ranging from 20 BHP and upwards from a range of engine manufacturers and can package them with a choice of diesel driven equipment including industrial open power units, electropaks, generator sets, fire pump sets, jetting units, hydraulic power packs and ATEX Zone II flame protected engines.

Prior Diesel’s dedicated Engine Sales Department has a wealth of knowledge and experience in all the above sectors and can offer consultation and discussion to ensure you identify an engine suitable for your specific requirements.

Whether it is for a new build project or a replacement engine, to a complete re-power we can help you by giving you all the technical support you need to make the right choice for you and your business.

We provide a total cost of ownership solution linking bronze, silver or gold service contracts accompanied by extended warranties where available to the package for peace of mind.

Where required, units are packaged to comply with legislative and major classification authorities.


Prior Diesel offers extensive services in the field of diesel power generation sets.

As a global leader in the design, manufacture, testing, servicing, installation, commissioning and the support of diesel power generation equipment Prior Diesel works closely with the oil and gas, marine, industrial and military applications including utilities, telecoms and offshore sectors.

Prior Diesel design and manufacture of diesel generating sets is market leading and includes supply to the industrial, offshore and marine generators of 40kW to 1,700kW in both standard and custom units.

Services for the marine sector include provision of main and auxiliary generators supported by specialists skills in emergency generator packages.  Generator sets are designed to be heat exchanger, keel or radiator cooled depending on requirements.

For the offshore sector Prior Diesel offers generator sets from rig safe specification to fully compliant Zone II specification, in order to operate safely in hazardous areas.

Staff expertise means excellence in the provision of both standard and custom equipment to meet exact customer requirements.

Prior Diesel is a distributor for most of the mainstream engine manufacturers, enabling customers access to the most cost effective and technically complaint solution to meet their requirements.


Prior Diesel, as designer and packager of diesel driven Zone II powerpacks, offers units ranging from 85bhp to 2000bhp using engines from the various manufacturers that we represent.

The explosion protection powerpacks are designed for safe use in Class I Division 2 (NEC500), Class I Zone II (NEC505) – ATEX Directive (94/9/EC) Zone II hazardous locations with category 3G (Zone 2), gas group IIA, T3 (200 degree C) temperature class certification.

Prior Diesel built Zone II powerpacks are suitable for a range of equipment including wireline, hydraulic powerpacks, nitrogen units, coil tubing, high pressure water jetting and generator sets.

Engines manufactured for operation in Zone II require significant modification and additional components including water cooled turbo and exhaust system, temperature sensors, air inlet shutdown valves, flame arresters and spark arrester on the exhaust system. This prevents any internal explosions from propagating to the external atmosphere.

A diesel engine should not be used in a potentially explosive environment unless it is suitably protected.


Prior Diesel offers, a range of emission compliant industrial diesel engines ranging from bare engines to industrial open power units.

Whatever your application, Prior Diesel can supply you with the perfect solution to meet your power demand.

The industrial engines we offer are from some of the world’s leading manufacturers including Volvo Penta, Perkins, Deutz, Iveco, JCB, John Deere, Detroit Diesel, Cummins, Kohler, Scania and Yanmar to name just a few. We are also able to supply additional brands if required.

Prior Diesel Engine Sales team can supply you with industrial engines for stationary and off-road applications and engines for the electrical power generation market.

Cost savings can be made from the latest emission compliant engines from low maintenance, fuel economy and reliability that are a key factor to keeping the wheels of industry turning.

Total cost of ownership can be a key decision maker when you choose an engine that fits your needs, talk to us to identify the correct product for your long term benefit.