BUKH D6 / 300-480 HP

BUKH solas marine engine

300 - 480 HP (221 - 353 kW)

Bukh´s 6-cylinder D6 is developed from the latest design in modern diesel technology. The engine has common rail fuel injection system, double overhead camshafts,

4 valves per cylinder, turbocharger and aftercooler. Together with a large swept volume and the EVC system (Electronic Vessel Control), this results in world-class diesel

performance, combined with low emissions. The engine is extremely compact for its high output.


Following powerrange is avaliable:


BUKH D6 - 300 HP (221 kW)

BUKH D6 - 340 HP (250 kW)

BUKH D6 - 380 HP (280 kW)

BUKH D6 - 440 HP (324 kW)

BUKH D6 - 480 HP (353 kW)



BUKH D6 - 300 HP (221 kW)

BUKH D6 - 340 HP (250 kW)

BUKH D6 - 380 HP (280 kW)

BUKH D6 - 400 HP (294 kW)

BUKH D6 - 440 HP (324 kW)

See below download for product spec.

Technical description

Engine block and head

  • Cylinder block and head made of cast iron
  • Ladder frame fitted to engine block
  • 4-valve technology with hydraulic lash adjusters
  • Double overhead camshafts
  • Oil-cooled pistions with two compressionrings and one oil scraper ring
  • Integrated cylinder liners
  • Replaceable valve seats
  • Seven-bearing crankshaft
  • Rear-end transmission


Engine mounting

  • Flexible engine mounting


Lubrication system

  • Easily replaceable separate full-flow and bypass oil filter
  • Seawater-cooled tubular oil cooler


Fuel system

  • Common rail fuel injection system
  • Control unit for processing the injection
  • Fine filter with water separator and alarm


Air inlet and exhaust system

  • Air filter with replaceable insert
  • Crankcase gases vented into the air inlet
  • Exhaust elbow or exhaust riser
  • Freshwater-cooled turbocharger
  • Loss of sea water alarm


Cooling system

  • Thermostatically regulated freshwater cooling
  • Tubular heat exchange with separate large volume expansion tank
  • Coolant system prepared for hot water outlet
  • Easily accessible seawater impeller pump


Electrical system

  • 12V or 24V two-pole electrical system
  • 14V/115A or 28V/80A marine alternator with Zener-diodes to protect the system from peak voltage, and integrated charging regulator with battery sensor cable for maximum use of alternator
  • Fuses with automatic reset (12V) and fuses with manual rest (24V)
  • Auxiliary stop button



  • Complete instrumentation/display packages, including e-key
  • Electronic shift and throttle avaliable
  • Plug-in connections



  • Shaft drive
  • Water jet

Number of cylinders 6
Bore and stroke 103/110
Model D6
Compression ratio 17,5:1
Valves per cyl 4
Engine crankcase vent syst Closed
Weight dry kg 584
Engine duty rating Avaliable in C12 - High Speed Craft Commercial_3 / C9 - Special Light Duty Commercial_4
Output [ps(kW)] acc. to ISO 8665 300 (221) / 330 (243) / 370 (272) / 435 (320)
Displacement [cc] 5500
Injection system Common rail fuel injection system
Alternator [A] 115A (12V) - Marine Alternator / 80 A (24V - Marine Alternator
Electronic engine diagnostic YES
Propulsion system Shaft drive / Water jet
Titel Type Størrelse Download
BUKH_D6-300_A4.pdf PDF 2.69MB Download
BUKH_D6-330_A4.pdf PDF 2.32MB Download
BUKH_D6-370_A4.pdf PDF 2.27MB Download
BUKH_D6-435_A4.pdf PDF 2.25MB Download
009M7400-1.pdf PDF 200.33KB Download
009M7401.pdf PDF 230.41KB Download