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Barrus Limited


+44 (0)1869 363 636


+44 (0)1869 363 600




Launton Road
OX26 4UR
United Kingdom


Yanmar Mariner Mercury Marine Diesel Outboard Engine Inboard Engine Propulsion Workboat RIB John Deere Custom Built

Contact Name:

Mark Coleman

Contact Position:

General Manager - Special Products Division


Supplier of custom-built specialised marine engines and accessories for the military, professional rescue organisations and commercial organisations.


The Special Products Division at Barrus is a dedicated team set-up to design and develop custom-built engines and accessories to meet the specific operational requirements of its professional customers. The team has the experience and knowledge to solve the stringent requirements and applications of specialist organisations including professional rescue services, the military and other government and commercial organisations.

Barrus has developed partnerships with major international companies representing major brands including Mariner and Mercury outboard engines, Yanmar and John Deere inboard marine diesel engines.

Custom-Engine Building and Test Facilities

Barrus has made a substantial investment to create one of the world’s largest and most modern custom-engine building facilities at the company’s headquarters in Bicester, Oxfordshire. This enables Barrus to build engines in single units to production runs in excess of 100. Barrus’ test facilities enable delivery of fully tested run-in and first serviced engines. Barrus facilities include

  • Five dynamometers capable of testing diesel engines up to 1600hp, with Europe’s only non-captive sterndrive dyno, a variable down-angle dyno and the world’s only Fabio Buzzi Trimax drive compatible dyno.
  • Two overhead mono-rail production lines capable of taking outboard engines up to 350hp and inboard engines up to 500hp.
  • An outboard test cell which can accommodate up to eight 350hp engines with transoms from 15” to 30”.
  • A machine shop and welding centre for prototype and low volume manufacture.
  • A dedicated engine overhaul area
  • A spray booth with warm air ventilation for superior paint finish

Mariner and Mercury Outboard Engines

Mariner and Mercury are the leaders in outboard engine technology with the most advanced and broadest range of outboards available. Mariner outboards have an awesome reputation for reliability and durability with the latest engines delivering an unsurpassed level of smooth power, fuel efficiency and emission levels. Mercury outboards are packed with features offering exceptional power and performance right through the range. The next-generation Mercury outboards now offers a multiple line-up of Verado, FourStroke, Pro XS and SeaPro V-6 and V-8 models ranging from 175-300hp. The new V-6 and V-8 engines are highly configurable to meet a wide variety of boating needs, from Verado’s refined performance; to the FourStroke’s fuel efficiency and rigging versatility; to the competitive edge that the Pro XS provides; and to SeaPro’s remarkable durability and reliability. These naturally aspirated, durable and powerful outboards set a new benchmark in the marine industry.

Post Immersion Restart Engines

Barrus leads the field in the development of Post Immersion Restart Engines for use in rescue and military operations. The unique, patented  FAST PIRSTM system enables an engine to be restarted after complete submersion within just 40 seconds. This entails evacuating all the water from the cylinder head, transfer ports and fuel system. Two new versions of PIRS® have been developed, GEN 2 FAST PIRS®, a simplified, more durable and cost-effective FAST PIRS® system and Capsize PIRS®, a four-stroke adaptation.

Multi-Fuel Outboard Engines

Another example of Barrus innovation is the multi-fuel 50hp outboard engine. This was designed and developed for the UK MoD and is capable of running on four different NATO fuels.

Yanmar and John Deere Inboard Engines

Yanmar marine diesel engines are renowned for their rugged reliability and economical operation with the light-duty commercial engines ranging from 53 to 530hp.

The Yanmar high-speed diesels offer a propulsion and auxiliary power range from 12hp to 911hp with the renowned reliability, durability and efficiency that are the trademarks of the Yanmar marine diesel engine range. 

John Deere marine propulsion and generator engines (107 to 750hp) are designed and manufactured with the demands of the commercial user in mind featuring low noise, low vibration and excellent fuel economy.

Air Lift Able Pump

Utilised by H.M. Coastguard search and rescue helicopters, the 2” trash pump with a lightweight air portable frame can be used for salvage, fire-fighting and general pumping.

Salt Water Pump

A Yanmar powered Barrus supplied salt water pump that is ideal for applications on salt water and mild base chemical.

SeaSearch Inflatables

SeaSearch inflatables from 3.9 to 4.2m have heavy-duty aluminium floors and can be rowed or powered by Mariner outboard engines up to 30hp.

MoD Emergency Relief Generator

The MoD specification Emergency Relief Generator is powered by a low noise, air-cooled, single cylinder Yanmar engine. The rugged frame with a durable electrophoretic coating makes it easy to move around and will withstand the rigours of continuous operation.

Custom Built Accessories

Barrus has designed, proven and patented a comprehensive range of accessories to enhance the operational tasks of its commercial users:

  • Outboard Propeller Guards
  • Twin Engine Single Tiller
  • Engine Transit Frames
  • Engine Lifting Harness
  • Umbilical Tube
  • Rotationally Cast Fuel Tanks
  • Waterproof Hour Meters
  • Reversible Carrying Handles


Marine Propulsion Engines

Inboard and Outboard Marine Engines from approx.. 10hp-480hp

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