Cummins QSC8.3 engine assembly 6CT8.3 CM850 complete engine Cummins diesel engine for PC300-8 PC350-8 excavator

Product Overview
We specialize in supplying premium mechanical and electronic diesel engine assemblies. Our Cummins QSC8.3 (also known as 6CT8.3) complete engine assembly, featuring the advanced CM850 electronic control system, is engineered as a direct, high-performance replacement for Komatsu PC300-8 and PC350-8 excavators. This robust power unit restores factory-rated power, fuel efficiency, and reliability to your heavy equipment.

Compatible Excavator Models
• Komatsu PC300-8
• Komatsu PC350-8

Product Identification & Specifications
• Engine Model: Cummins QSC8.3 (6CT8.3 Series)
• Control System: CM850 Electronic Engine Control Module (ECM)
• Configuration: In-line 6-Cylinder
• Displacement: 8.3 Liters
• Aspiration: Turbocharged & Aftercooled
• Condition: New, Complete Engine Assembly
• Application: Heavy-Duty Construction & Mining Excavators

Key Features
✔️ Direct OEM Replacement: Precision-engineered to match the exact specifications and mounting requirements of PC300-8 and PC350-8 excavators.
✔️ Advanced CM850 Electronics: Provides precise fuel control, optimal performance mapping, and comprehensive diagnostic capabilities for maximum uptime.
✔️ High Torque Output: Delivers exceptional low-speed torque, ideal for the demanding hydraulic cycles of large excavators.
✔️ Proven QSC8.3 Platform: Built on Cummins' renowned reliability, designed for durability in the most challenging environments.
✔️ Complete Drop-In Assembly: Includes long block, CM850 ECM, and all necessary components for a streamlined installation process.
✔️ Fuel Efficiency: Optimized combustion via the CM850 system reduces fuel consumption and operating costs.

Quality Assurance
• Manufactured to original Cummins QSC8.3 engineering standards.
• CM850 system is calibrated and tested for full functionality.
• Complete assembly undergoes rigorous performance validation.

Why Choose This Assembly for Your Excavator
• Guaranteed Compatibility: Perfect fit for Komatsu PC300-8 and PC350-8 models, ensuring no integration issues.
• Restores Peak Performance: Brings your excavator back to its original power and efficiency levels.
• Reduces Downtime: A complete, ready-to-install unit gets your critical equipment back to work faster.
• Simplified Sourcing: One comprehensive solution replaces the complexity of sourcing an engine block, CM850 system, and all internal components separately.