Seapower Marine is the main Cummins UK dealer for marine engines and generators. The Cummins marine diesel engines are available from 4.5L to 15L as both propulsion or auxialliary. We also supply generators up to 99kW including the Onan Quiet Diesel product range. We have been working with Cummins and their products since 2004 and we are dedicated to supporting the brand and its customers. We are passionate about the Cummins range and work hard to supply from stock: main equipment, parts, service work and offer technical expertise around the world.

We supply most commerical craft including passenger vessels, fishing boats, windfarm support vessels, tugs, pilot boats, dredgers, inland waterways, charter yachts and recreational vessels.
Our warehouse holds extensive stocks of genuine service spare parts for propulsion and auxillary engines and Onan generators. Our fully equipped workshop undertakes upfit work, spraying, repairs and overhaul work. We keep marine diesel engines and Onan generators in stock from our UK warehouse.

We supply Cummins diesel engines and Onan generators; ZF and TwinDisc gearboxes and Halyard exhaust systems supporting commercial boat builders, shipyards, blue water cruising yacht designers, such as Oyster Yachts and recreational marine users both in the UK and around the world. We hold extensive stocks of parts for these proudcts as well as Fleetguard, Mercury Marine, Volkswagen Marine, Marine 16, Rydlyme and Beta Marine.

Click here for more information

The NEW CUMMINS – Marine Diesel Cummins Turbo (MDCT) genset.
This robust genset can be fitted with either the low or high kW Cummins B4.5 auxiliary engine, giving genset ratings of 40 kWe – 80 kWe and 80 kWe – 110 kWe respectively. The MDCT generator set is available for orders now with estimated delivery in late 2023.

This powerful genset pairing is small but mighty and available in both 50 Hz and 60 Hz models. Using the Cummins Onan Digital Display, this genset provides user-friendly diagnostics including extensive engine and alternator information, ensuring customer ease on the water. The MDCT genset is available for both commercial and recreational marine applications and compliant with EPA Tier 3 and EU Stage V regulations.

TECHNICAL RESOURCES – We hold extensive documentation for all of the products we supply such as Data Sheets, Fuel Ratings, Installation Manuals, Parts and Services Manuals and Warranty documents. Files can be found and downloaded under the Technical Tab of the website.

If you are having difficulty finding information, please contact us on +44 (0)1473 780090 or send us an email.