S12H-Y1PTA-3
Mitsubishi S12H-Y1PTA-3 Diesel Engine
Available through Frontier Power — your trusted source for industrial diesel engines and reliable generator drive solutions.
Overview
The Mitsubishi S12H-Y1PTA-3 is a powerful 12-cylinder, V-type industrial diesel engine developed by Mitsubishi Heavy Industries. Engineered for generator set applications, it provides strong and consistent power for both standby and prime power operations. Known for its rugged design, efficiency, and long service life, the S12H-Y1PTA-3 is an excellent fit for demanding industrial environments.
Key Features
V12 Turbocharged Design – Delivers reliable performance with turbocharging and aftercooling for high-demand loads.
Durability – Built for extended operation and long service intervals in critical environments.
Stable Operation – Mitsubishi’s proven fuel injection and cooling systems keep performance steady under varying conditions.
Service-Friendly – Features a layout designed for easy inspection and maintenance, with shared parts across the H-series.
Flexible Integration – Widely used in generator drive systems with compatibility across multiple configurations.
Applications
The S12H-Y1PTA-3 is trusted for a wide range of industrial power generation needs, including:
Generator Sets – Prime and standby duty packages for large industrial and commercial facilities.
Critical Infrastructure – Reliable backup power for hospitals, utilities, telecoms, and data centers.
Heavy Industry – A proven choice in manufacturing, mining, and distributed energy systems.
STAND BY HP
1140 (1528.4) / 1800CONTINUOUS HP
1036.0 (1388.8) / 1800EMISSIONS LEVEL
EPA Tier 1 (varies)ENGINE DISPLACEMENT
37.11 (2264.59)

