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St. Thomas, US Virgin Islands


The JH series are four-stroke direct injection diesel engines equipped with liquid coolant systems. The 4JH4–HTE is 4-cylinder and turbocharged with an intercooler. The engines are equipped with a marine gear or sail drive unit and are designed for pleasure craft use.

Compact and powerful, clean and quiet, these are mid-range three and four-cylinder diesels based on a completely redesigned engine block and new combustion system. The new 3JH5E and 4JH5E are fully compliant with EPA Tier 3 emissions regulations, so you can enjoy more displacement, power and torque, with low vibration, low noise and low emissions. Maintenance is easy and straightforward. In any case, you have the comfort of knowing that Yanmar Marine provides high quality service and advice facilities around the globe.

  • Highly efficient performance
  • Whisper quiet running
  • Powerful electrical system
  • Simple to maintain