BUKH D4 / 175-320 HP

BUKH D4 / 175-320 HP

175 - 320 HP (129 - 235 KW)
Bukh´s 4-cylinder D4 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.

BUKH D4 - 175 HP (129 kW)
BUKH D4 - 230 HP (169 kW)
BUKH D4 - 270 HP (199 kW)
BUKH D4 - 300 HP (221 kW)
BUKH D4 - 320 HP (235 kW)

BUKH D4 - 230 HP (169 kW)
BUKH D4 - 270 HP (199 kW)
BUKH D4 - 300 HP (221 kW)
BUKH D4 - 320 HP (235 kW)


Engine block and head
Cylinder block and head made of cast iron
Combined ladder frame and balance shafts
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
Five-bearing crankshaft
Rear-end transmission

Engine mounting
Flexible engine mounting

Lubrication system
Easily replaceable separate full-flow and by-pass oil filter
Seawater cooled tubular oil cooler
Oil level and oil temperature sensors
Crankcase oil separator, maintenance free unit

Fuel system
Common rail fuel injection system, 2000 bar
Electronically controlled central processing system
Fuel pressure sensor that indicates clogging in fuel filters
Single fine filter with water separator and water in fuel 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
Seawater tubular heat exchanger
Coolant system prepared for hot water outlet
Seawater impeller pump
Engine mounted seawater strainer

Electrical system
Marine alternator (12V/150A or 24V/80A)
Autmatic fuses for engine, transmission and EVC
Auxiliary stop button
Power connections and fuses co-located in one connection box on engine

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

Shaft drive
Water jet
Stern drive


Number of cylinders 4
Bore and stroke 103/110
Charging alternator 12V - 150A / 24V - 80A
Net weight 510/525
Model D4
Compression ratio 18,0:1
Valves per cyl 4
Engine crankcase vent syst Closed
Engine duty rating Avaliable in C12 - High Speed Craft Commercial_3 / C9 - Special Light Duty Commercial_4
Output [ps(kW)] acc. to ISO 8665 175 (129) / 230 (169) / 270 (199) / 300 (221) / 320 (235)
Displacement [cc] 3670
Injection system Common rail fuel injection system
Alternator [A] 12V - 150A / 24V - 80A
Electronic engine diagnostic YES
Propulsion system Shaft drive / Water jet