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YANMAR powerboat engines deliver outstanding power, speed, efficiency, and reliability. Our engines have proven to be the ideal solution for multiple applications, commercial and recreational, given a customizable options range - available for shaft, stern, and jet drives, with SOLAS and semi 2-pole option, high power primary and secondary alternators, purpose-built plug & play interconnectivity to any NMEA or J1939 device, and more. YANMAR engines deliver 5x Best in Class product features with the added benefit of the best global support network in the marine industry.

Rated output220 kW / 299 mhp & 232 kW / 315 mhp
Rated Speed3800 rpm
Displacement4.164 L [254 cu in]
Cylinders6 in-line
Bore x Stroke94 mm x 100 mm
Type4-stroke, vertical, water-cooled diesel engine
Emission complianceEU: RCD 1, BSO II, EMC

For the latest manuals, product guides, spec sheets and more, please visit Yanmar Marine's product page.



Designed, built and proven by Yanmar, the all-new ZT370 sterndrive is the perfect match for Yanmar’s LV and LP marine engine series. The ZT370: unsurpassed for new installations and ideal for repowering.

The propulsion system is the heartbeat of your boat. It needs all of those renowned Yanmar qualities of performance, reliability, durability and respect for nature. Now, high technology engines and leading edge drives are available in an all-Yanmar power package, brought together for the very best in boating enjoyment.

The quiet, hydrodynamic ZT370 has a new type of hydraulic clutch for exceptional smoothness, precision forged gears for extra-long life, two counter-rotating propellers for superb acceleration and tight-hold tracking, and large rudder dimensions for superior handling on single and twin engine boats. All with low noise, corrosion protection and minimised maintenance.


  • New engines or repowering
  • Single or dual installation
  • Also available with integrated electromagnetic shift
  • In combination with Yanmar's all new VCS electronic system, you can use the newly developed joystick for easy maneuvering
Engine type [mhp]150 - 370
Reduction Ratio (fwd/asn)1.97/1.97 2.18/2.18
Reduction gear systemHydraulic actuated multi-friction disc clutch
Dry weight [kg - lbs]112 kg [247 lbs]

B20 & C30 PANELS

The B20 & C30 are YANMAR’s start/stop tachometer panels which are compatible with YM, JH, LH and LP series mechanical YANMAR engines. The B20 & C30 panels also show some engine alarms and can drive an optional fuel level gauge.

*YM series engines only available with B20 panels, they are not available with the C30 panels.

B Panel: Includes Tachometer and pre-heat control

C Panel: Includes Tachometer, oil pressure, and water temperature gages and pre-heat control

Basic parameters shown:

  • Engine hours
  • Back light
  • Battery voltage

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