Inboard Engines

YANMAR’s new generation JH-Common Rail Series with class leading features out performs its competition. Compact, powerful, smooth, quiet, efficient and interconnective, the JH-CR Series is perfect for any application whether rib, tender, sailboat or catamaran, new or re-power. With over a 100 years of innovation, unequaled reliability, and the largest marine engine global service network, choosing a YANMAR ensures you will enjoy many safe and carefree years on the water.

Featuring the latest engine technologies, the 4LV Series is undoubtedly cleaner, quieter, and produces more torque & acceleration than any other engine in its class. The 4LV is the ideal solution for sailing yachts over 50 ft, super yacht tenders, small motorboats and light duty commercial vessels.Equally, the 4LV doesn’t disappoint in performance. The 2.8 L displacement delivers a powerful low-end torque performance. This results in a stunning acceleration and really sets these engines apart from others in their power range.

The 3-cylinder 3JH40 has been developed by leading manufacturer YANMAR as the marine industry’s smallest CR inboard diesel engine. With an output of 40 mhp, it will enable a whole new category of smaller leisure boat owners and commercial vessel operators to benefit for the first time from the efficiency and performance advantages associated with the most recent electronically-managed CR fuel-injection technology.

JH Series 28.7 - 92kW (39 - 125HP) Three and four cylinder direct injection diesels with heat exchanger cooling. Choices of natural aspiration, turbocharged and turbo / aftercooler models, with straight drive or angle drive transmissions. Smaller horsepower models are also offered with Saildrive units. JH Series 3JH4 (39HP / 28.7kW) The Yanmar 3JH4 is an all new naturally aspirated engine for sailboats and motor craft - quieter, cleaner and producing more torque - with the largest displacement and smallest dimensions in its class. Its fullfy compliant with EPA Tier 2 emissions regulations and with BSO / SAV Stage 2 requirements.

Yanmar’s successful wave-ribbed ‘monoblock’ cylinder block, stampforged carbon steel crankshafts and connecting rods are part of the story of strength in all CH engines. They also have a special thermocontrolled, fresh water cooling system that keeps all vital parts at optimum operating temperature, greatly saving wear and prolonging engine life. Another great advantage is the latest Yanmar marine gear, carefully matched by our own technicians to make the ideal combination of strength and smooth power drive. 95.6

Clean, Quiet, Efficient: DI technology uses injectors to spray diesel fuel atomized at 26,000 psi directly into the main combustion chamber of each cylinder. DI technology uses injectors to spray diesel fuel atomized at 26,000 psi directly into the main combustion chamber of each cylinder. This process optimizes fuel efficiency and minimizes emissions, along with engine Noise, Vibration and Harshness (NVH) for an enjoyable boating experience.

LH Series 118–177kW (116–240HP) Tough, reliable, compact and with outstanding power-to-weight benefits, these four-cylinder direct injection Yanmars in the LH Series include sterndrive models. The turbocharger has a wastegate boost compensator to improve acceleration still further. LH Series 4LHAM-STP (240HP/177kW) Tough and dependable high-output four-cylinder diesel, turbocharged and aftercooled. Develops 240HP (177kW) at 3,300 rpm. Supplied as bob-tail unit so that you can choose your transmission type

JH Series 28.7–92kW (39–125HP) Three and four-cylinder direct injection diesels with heat exchanger cooling. Choices of natural aspiration, turbocharged and turbo/aftercooler models, with straight drive or angle drive transmissions. Smaller horsepower models are also offered with Saildrive units. JH Series 4JH4-TE (75HP/55kW) ighly efficient and light in weight, this tough four-cylinder diesel is available with straight or angle drive, mechanically or hydraulically activated.

For ski boats to fast sports craft to luxury cruisers – new build or repowering – the 8LV is at the forefront of today’s propulsion technology, providing the kind of high end performance associated with V8 gasolene engines, but with all of the solid, long-life and cost-effective benefi ts of diesel. This V8 can be matched perfectly with Yanmar’s latest twin-propeller sterndrive, the ZT370, or to a KMH50 inboard transmission. Yanmar remains dedicated to achieving maximum performance from minimum weight and the 8LV proves the point: another big displacement engine, weighing in dry at a mere 435 kilograms.

For ski boats to fast sports craft to luxury cruisers – new build or repowering – the 8LV is at the forefront of today’s propulsion technology, providing the kind of high end performance associated with V8 gasolene engines, but with all of the solid, long-life and cost-effective benefi ts of diesel.The 8LV provides boaters with the best-in-class power band. It idles at 550 rpm, capable of crawling speed in the marina, aided further by the hydraulic clutch of the ZT370 or KMH50 drive systems. Maximum engine speed is a big 3,800 rpm – well ahead of other engines in this segment. You can enjoy high power, high torque. Low noise, low vibration. You can go much further on a tank of fuel. There is the advantage of a 12 volt, 180 amp alternator to charge all your onboard electrics. The 8LV uses Yanmar’s new CAN-bus control system, the Yanmar VCS, so you don’t have to rely on anyone else. Then there is easy installation, simple servicing, and all that worldwide Yanmar support, wherever, whenever.

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.

LH Series 118–177kW (116–240HP) Tough, reliable, compact and with outstanding power-to-weight benefits, these four-cylinder direct injection Yanmars in the LH Series include sterndrive models. The turbocharger has a wastegate boost compensator to improve acceleration still further. LH Series 4LHAM-DTP (200HP/147kW) More power with less weight. Economical but high performing, direct injection and turbocharged four-cylinder diesel. Supplied as bob-tail unit so that you can choose your transmission type.

LH Series 118–177kW (116–240HP) Tough, reliable, compact and with outstanding power-to-weight benefits, these four-cylinder direct injection Yanmars in the LH Series include sterndrive models. The turbocharger has a wastegate boost compensator to improve acceleration still further. LH Series 4LHAM-HTP (160HP/118kW) Turbocharged, direct injection four-cylinder diesel power with outstanding power to weight ratio. Supplied as bob-tail unit so that you can choose your transmission type.

Featuring the latest engine technologies, the 4LV Series is undoubtedly cleaner, quieter, and produces more torque & acceleration than any other engine in its class. The 4LV is the ideal solution for sailing yachts over 50 ft, super yacht tenders, small motorboats and light duty commercial vessels.Combining the latest engine technologies, including new generation common-rail systems and the most advanced, complete combustion in YANMAR’s line, the 4LV Series is undoubtedly cleaner, quieter, and produces more torque & acceleration than any other engine in its class.

Featuring the latest engine technologies, the 4LV Series is undoubtedly cleaner, quieter, and produces more torque & acceleration than any other engine in its class. The 4LV is the ideal solution for sailing yachts over 50 ft, super yacht tenders, small motorboats and light duty commercial vessels.Equally, the 4LV doesn’t disappoint in performance. The 2.8 L displacement delivers a powerful low-end torque performance. This results in a stunning acceleration and really sets these engines apart from others in their power range.

Featuring the latest engine technologies, the 4LV Series is undoubtedly cleaner, quieter, and produces more torque & acceleration than any other engine in its class. The 4LV is the ideal solution for sailing yachts over 50 ft, super yacht tenders, small motorboats and light duty commercial vessels.The 4LV proves to be an extremely efficient engine without any compromise on quality. Featuring Thermo Swing Wall Insulation Technology and incorporating the newest system in common-rail technology, the mid-range engines deliver maximum performance and reliability, while maintaining minimal fuel consumption and exceptionally low noise & emission levels. By exceeding the strict EPA Tier 3 and EU RCD Stage 2 emission regulations, the engines feature virtually smoke and odor free operation.

The 4LV proves to be an extremely efficient engine without any compromise on quality. Featuring the newest system in common-rail technology, the mid-range engines deliver maximum performance and reliability, while maintaining minimal fuel consumption and exceptionally low noise & emission levels. By exceeding the strict EPA Tier 3 and EU RCD Stage 2 emission regulations, the engines feature virtually smoke and odor free operation. Equally, the 4LV doesn’t disappoint in performance. The 2.8 L displacement delivers a powerful low-end torque performance. This results in a stunning acceleration and really sets these engines apart from others in their power range. To ensure support of advancing marine technologies, direct connectivity to NMEA and J1939 CAN-bus networks has been purpose engineered into the 4LV range, allowing future-proofed integration to any multifunction bridge display.

The new 6LY takes the all the attributes of its forerunners and adds major engineering advances. The beating heart of the engine remains the international powerboat racewinning compact 5.8 -litre in-line six-cylinder YANMAR engine block that over three decades has cemented its popularity with boat designers, builders and owners who laud its performance, fuel efficiency, reliability and smooth and quiet operation.

The new 6LY takes the all the attributes of its forerunners and adds major engineering advances. The beating heart of the engine remains the international powerboat racewinning compact 5.8 -litre in-line six-cylinder YANMAR engine block that over three decades has cemented its popularity with boat designers, builders and owners who laud its performance, fuel efficiency, reliability and smooth and quiet operation.

The 6LF engine is a compact and powerful common rail diesel engine, perfect for planing and semi-planing vessels, both recreational and light duty commercial. Controlled by the YANMAR VC20 system, it expands YANMAR brand’s line with higher horsepower, providing the largest common rail, electronically managed marine diesel line-up in the industry.