Mitsubishi S12R-PTA Industrial Diesel Engine – 12-Cylinder - 2017

The Mitsubishi S12R-PTA is a robust, high-performance industrial diesel engine designed for constant-speed applications in power generation and heavy-duty operations. With its 12-cylinder, 60° V-type configuration, this 49.03-liter engine combines turbocharging and a water-cooled design for sustained, efficient operation under full load conditions.

Engineered for durability and low operating costs, it features direct fuel injection via a twin in-line pump (pump-line-nozzle system), ensuring accurate and consistent fuel delivery. The separate jacket-water and charge-air cooling circuits further improve thermal performance and engine longevity. Designed with a SAE 21” flywheel and SAE #00 housing, this engine is ideal for industrial integration. Its 24V electrical system and counter-clockwise rotation (as per ISO 1204) make it suitable for a wide range of OEM and genset applications.

Specifications:

– Model / Type: S12R-PTA – 4-stroke diesel, constant speed
– Cylinders: 12-cylinder, 60° V configuration
– Bore × Stroke: 170 mm × 180 mm
– Total Displacement: 49.03 liters
– Aspiration: Turbocharged
– Combustion / Injection: Direct injection, twin in-line pump (pump-line-nozzle)
– Cooling System: Water-cooled, with separate jacket-water and charge-air circuits
– Electrical System: 24 V
– Rotation (ISO 1204): Counter-clockwise
– Flywheel / Housing: SAE 21″, SAE #00
– Dry Weight: 5,350 kg
– Dimensions (L × W × H): 2,571 × 1,360 × 1,592 mm
– Year of Manufacture: 2017

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