The Yanmar 4TNV98CT is a robust, in-line, 4-cylinder, 4-stroke, vertical, water-cooled diesel engine ideal for industrial and generator applications. It delivers a maximum output of 53.7 kW (73 mhp) at 2500 rpm. Each model features a displacement of 3.319 L with a bore and stroke of 98 mm × 110 mm. The engine utilizes turbocharging and a direct injection system, with a common-rail fuel system and electronic engine control for improved efficiency and emissions performance. The design includes water-cooled cooling, enclosed forced lubrication, and a 12 V–80 A electrical system. Compact and reliable, it weighs approximately 275 kg (dry) and measures 963 × 600 × 821 mm (L × W × H). Certified to EU Stage V and EPA Tier IV Final emission standards, it meets both industrial and generator regulatory requirements.

ENGINE SPECIFICATIONS
Rated Output           Rated Speed      Emissions          
53.7 kW / 73mhp     2500 RPM             EPA Tier 3