NT 855

Komatsu NT-855 Rebuild Kits: High-Quality and Durable

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Optimize the performance and durability of your Komatsu NT-855 engine with our premium Komatsu NT-855 Engine Rebuild Kits. Carefully curated with certified premium components, these kits offer a comprehensive solution for overhauling your engine. From gaskets to bearings and everything in between, our rebuild kits provide the necessary parts to restore your Komatsu equipment's power and reliability. Trust in our commitment to genuine Komatsu Parts and elevate your equipment's performance.


The Komatsu NT855 engine is a turbocharged, and aftercooled diesel engine commonly used in various Komatsu equipment, such as excavators, wheel loaders, and bulldozers. Here are the specifications for the Komatsu NT855 engine:

- Displacement: 14.0 liters (855 cubic inches)
- Configuration: Varies by Model
- Aspiration: Turbocharged with an air-to-air aftercooler
- Fuel System: Direct injection
- Cooling System: Liquid-cooled
- Bore x Stroke: 140 mm x 152 mm (5.51 inches x 5.98 inches)
- Compression Ratio: Varies depending on the specific version
- Power Output: The power output of the NT855 engine can vary depending on the specific model and application. However, typical power ratings for this engine range from approximately 250 horsepower (186 kW) to 400 horsepower (298 kW).
- Torque: The torque output can also vary based on the equipment and application, but it typically ranges from around 1,100 Nm (811 lb-ft) to 1,750 Nm (1,289 lb-ft).
- Emissions: The Komatsu NT855 engine is designed to meet various emission standards, such as Tier 1 or Tier 2, depending on the specific model and market.

Please note that the specifications mentioned above are general and can vary slightly depending on the specific version or model of the NT855 engine used in different Komatsu equipment. For the most accurate and detailed information, I recommend referring to the official Komatsu documentation or contacting Komatsu directly for the specific model or application you are interested in.