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Cummins & Cummins Onan Dealership

cummins authorisedSeapower Marine have been a Cummins Light Commercial and Recreational Marine Dealer since 2007. Over the years, we have built up a wealth of knowledge and experience in dealing with Cummins engine and Cummins Onan generator installations, warranty work, servicing and part supply. Our dealership area covers Norfolk, Suffolk, Essex and down to St Katherine's Dock.

Our staff are trained regularly by Cummins UK, enabling them to help you identify service parts, give advice on fault diagnosing, warranty issues, down to helping you diagnose more serious operational issues and choosing the right new engine or generator. We have Cummins test generators onsite, enabling us to assist with diagnose and replicate any faults. We also offer a Cummins Onan PCB check and configuration service, for further details please call the office.

We hold large stocks of the most common service items for all Cummins Onan MDK and MDD generators and Cummins QSB5.9, 6.7, QSL9.0 and QSM11.

If you have an Cummins engine from 2007 - 2011 which is a Cummins Mercruiser Diesel we can still provide you with technical help and service parts.


  • rydlyme
  • Mercury Diesel
  • Lowrance
  • BetaMarine
  • B&G
  • garmin
  • mcmurdo
  • ICOM
  • cummins
  • Cummins Onan
  • Simrad
  • Fleetguard
  • vw-marine
  • Oyster Preferred service partner
  • Cummins-Onan dealer


    Woolverstone Marina
    Ipswich Suffolk
    IP9 1AS

    T: Office +44 1473 780090
    T: Sales & Parts +44 1473 781713
    E: parts@seapowermarine.co.uk


    Marine Diesel Engines
    Marine Generators
    Marine Engine & Generator Parts
    Marine GPS, Chart Plotters & Radios
    Bow & Stern thrusters
    Propellors & Shafts


    Engine Installation & Service
    Generator Installation & Service
    Marine Electronic Service & Repair

    Our Range

    Beta Marine
    Cummins & Cummins Onan
    Mercruiser Diesel
    VW Volkswagen Marine