Yanmar 4JH4-HTE 110HP Inboard Marine Diesel Engine

Using a turbocharged and intercooled 1.995L inline four-cylinder layout, the Yanmar 4JH4-HTE produces 110 hp at 3,200 rpm at the crankshaft. Direct injection uses a mechanical governor core pump, while the 18.4:1 compression ratio and Diesel No. 2-D requirement with a minimum cetane rating of 45 define the supplied fuel-system configuration. Closed-loop fresh-water heat-exchanger cooling uses a raw-water exhaust bypass.

The bobtail engine baseline weight is 472 pounds, and the listed alternator output is 12V at 80 amps with an optional 125-amp upgrade path. The supplied specification identifies EPA Tier 2, EU RCD I, and BSO Stage II emissions compliance. It is listed for primary propulsion on compact semi-planing motorboats and auxiliary power on specified cruising sailboat configurations.

Why Choose the Yanmar 4JH4-HTE Marine Diesel Engine

The 4JH4-HTE marine diesel engine combines 110 hp at 3,200 rpm with turbocharging, intercooling, and direct injection in a 1.995L four-cylinder platform. Buyers can compare its closed-loop heat-exchanger cooling, raw-water exhaust bypass, 12V 80-amp alternator with optional 125-amp upgrade path, and stated application data. The 472-pound bobtail baseline also supports engine-bed planning before installation.

Warranty and Support

This model is eligible for Yanmar’s 3-Year Extended Limited Warranty program for first retail purchasers of qualifying engines bought on or after July 1, 2015, when used only for private and recreational purposes. provides product-information support before purchase and assistance with order-related questions. Review warranty eligibility and current coverage details on before placing your order.

Before Ordering the Yanmar 4JH4-HTE Marine Diesel Engine

Before ordering, verify that your vessel supports the stated 472-pound bobtail baseline weight, the complete propulsion package, and access for the turbocharger, intercooler, cooling system, and wet-exhaust components. Confirm Diesel No. 2-D fuel supply, raw-water intake, exhaust routing, alternator requirements, gearbox and propeller matching, shaft or saildrive alignment, hull suitability, ventilation, and professional installation planning.