Komatsu Bare Engine Assembly 6D107 cylinder block for construction equipment

The Komatsu 6D107 series engine has established itself as a benchmark power platform for medium-sized construction machinery (such as 20-ton class excavators) thanks to its exceptional reliability and superior power density. It delivers not only outstanding fuel economy but also excellent load response in complex and varied operating conditions. The "Bare Engine Assembly" comprises core components—including the cast-iron cylinder block, reinforced cylinder head assembly, crankshaft, connecting rods, pistons, and camshaft—making it an ideal foundation for complete engine replacement or high-standard, comprehensive overhauls.

Engine Configuration: Inline-6 ​​cylinder, 4-stroke, water-cooled, 6.69L displacement

Cooling System: High-efficiency, heavy-duty water cooling (designed for thermal balance under harsh operating conditions)

Air Intake System: Turbocharged and intercooled (significantly optimizes low-speed torque and overall operational efficiency)

Rated Power: Approx. 110–160 kW (150–215 hp), depending on specific equipment application calibration

Fuel System: High-pressure common-rail electronic fuel injection (precise ECU control ensures optimal injection pressure and fuel atomization, balancing power output with emissions compliance)

Key Advantages:

Precision Electronic Management: Real-time adjustment of fuel injection strategies based on load fluctuations, significantly reducing fuel consumption and engine vibration.

Exceptional Reliability: Inherits Komatsu’s signature heavy-duty design philosophy; core components offer an exceptionally long fatigue life.

Comprehensive Service Network: As a globally mainstream engine model, it benefits from mature diagnostic data and established parts supply channels, ensuring high equipment uptime.

Primary Applications: Komatsu PC200/PC220 series excavators, medium-sized wheel loaders, and various specialized industrial power units.

Guangzhou Jianming Machinery Equipment Co., Ltd.

With 20 years of solid practical experience, we are experts in the field of machinery power systems and components.

We began as a small machinery repair shop. Over the past two decades, we have accumulated a wealth of successful global case studies and extensive maintenance expertise. Drawing on extensive frontline experience in resolving complex mechanical issues, we have earned global acclaim and grown into a comprehensive enterprise employing over 200 professionals.

We possess a deep understanding of the challenges equipment faces under extreme conditions, backed by rich practical experience and expertise in the following areas:

**Heavy Machinery Power Upgrades and Retrofitting:** We provide customized engine replacement and overhaul solutions for various types of construction machinery, with specialized expertise in the restoration and tuning of electronically controlled power platforms, such as the Komatsu 6D107 series.

**Mining and Industrial Equipment Maintenance:** We offer professional power optimization and fault diagnosis strategies to ensure continuous equipment operation under heavy-load conditions.

**Agricultural and Irrigation Power Systems:** We provide power unit upgrades and comprehensive troubleshooting services for a wide range of agricultural machinery and irrigation equipment.

Leveraging our extensive technical expertise, we are also a robust supplier of spare parts:

**Comprehensive Machinery Parts Supply:** We offer a wide selection of carefully curated construction machinery parts—including high-pressure common-rail injectors, piston and connecting rod kits, precision cylinder heads, ECU modules, and engine overhaul gasket sets—to meet all your one-stop procurement needs.

Our wealth of practical experience and robust supply chain system are our most valuable assets. Whether you are facing complex mechanical challenges or require reliable spare parts, Jianming Machinery possesses the expertise to help you succeed!