Komatsu 6D140 engine for Komatsu
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+86 195 7370 2709
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+86 180 7463 2986
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+86 173 2224 5031
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The Komatsu 6D140 is a powerful and reliable inline 6-cylinder, 4-stroke, water-cooled diesel engine with a displacement of 14.0 liters. Specially designed for large construction and mining machinery, it delivers high horsepower and massive torque, ensuring stable operation even under the most demanding conditions. Known for its durability and efficiency, the 6D140 is widely used in large excavators, bulldozers, and mining trucks.
Basic Information
Type: Inline 6-cylinder, 4-stroke, water-cooled diesel engine
Displacement: 14.0 L
Bore × Stroke: 140 mm × 165 mm
Number of Valves: 2 per cylinder, total 12 valves
Compression Ratio: Approximately 17:1
Performance
Maximum Power: about 250–400 kW (335–540 HP) @ 1900–2100 rpm (depending on version)
Massive low-end torque for heavy-duty equipment
Fuel System: Mechanical direct injection (later versions with electronic fuel control available)
Emission Standard: Early versions non-emission; updated variants meet regional emission standards
Structure and Maintenance
Cooling: Water-cooled
Starting: Electric starter
Weight: approx. 1,400–1,600 kg (varies with configuration)
Replaceable wet cylinder liners for extended service life
Rugged design for high reliability in harsh conditions
Applications
Large excavators (e.g., Komatsu PC600, PC650 series)
Bulldozers (e.g., Komatsu D155 series)
Mining trucks and wheel loaders
Industrial and mining machinery
Core Advantages
High power output and exceptional torque performance
Robust and durable, designed for extreme working conditions
Proven Komatsu reliability with long service intervals
Wide global availability of spare parts and service support
Related Models
We also provide Komatsu engines such as 6D95, 6D102, 6D107, 6D114, and 6D125, covering a full range of Komatsu construction and mining equipment.