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Genuine Cummins QSM11-350 Industrial Engine: The Powerhouse for Heavy Construction
The Cummins QSM11-350 diesel engine is a high-performance 10.8L industrial power unit designed for heavy-duty construction, mining, and agricultural equipment. As a trusted supplier, HekoPower provides genuine XCEC QSM11-350 engines with reliable supply, competitive wholesale pricing, and global delivery support.
This 350HP Cummins QSM11 engine combines advanced electronic control, turbocharging, and fuel-efficient performance, making it a preferred choice for demanding industrial applications.
Tech Specs of XCEC QSM11-350
General Engine Data
Engine Model: Cummins QSM11-350
Type: 6 Cylinders in Line
Displacement: 10.8 L
Bore * Stroke: 125 * 147
Overall Dimension: 1306mm*914mm*1280mm
Net Weight (with flywheel & alternator): 984 Kg
Key Performance Data
Rated Power: 261 kW/350HP
Rated Speed: 2100/2000 rpm
Max Torque/Speed(2100 RPM): 1776 N.m @ 1400 rpm
Max Torque/Speed(2000 RPM): 1830 N.m @1400 rpm
Fuel Consumption @ Rated Power: 217 g/Kw.h
More Technical Data
Certification: Tier III
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Common Rail High Pressure Injection
Compression Ratio: 16.3:1
Electrical System (Starter Motor/Alternator): 12V/24V
Lowest Starting Temp Without auxiliary system: -12℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 9.5 L
Control System: Full Electronic Control System(ECM)
Technical Deep-Dive: QSM11-C350 Diesel Engine Specifications
The heart of the QSM11-350 industrial engine lies in its 6-cylinder, in-line, 4-stroke architecture. With a displacement of 10.8L, this turbocharged charge air cooled industrial engine utilizes the Cummins Celect fuel system.
The Advantage of the Celect Fuel System & ECM
Unlike older mechanical models, the Cummins QSM11-350 ECM industrial engine uses an Electronic Control Module (ECM) to monitor engine parameters in real-time. This electronic control diesel engine ensures:
- Optimized Fuel Consumption: Tailored injection timing based on load.
- Precision Torque: A maximum torque of 1830 N·m, providing the "breakout force" required for mining and heavy excavation.
- Diagnostic Ease: Rapid troubleshooting via electronic service tools, reducing downtime.
Superior Fuel Efficiency & Operating Economics
The advanced electronic control system and high-pressure common rail fuel injection technology ensure optimal Cummins QSM11-350 fuel consumption across its operating range. The engine’s flat torque curve provides strong pulling power at low RPMs, reducing the need for frequent gear changes and lowering overall operational costs. This translates to a lower total cost of ownership and enhanced Cummins QSM11 engine reliability and maintenance cost profile over its long service life.
QSM11-350 vs M11-C350 Engine Comparison: Why Choose the QSM series?
Many operators ask about the difference between the classic M11 and the XCEC QSM11-C 350HP construction diesel engine. While the M11 is a legend, the QSM11 offers significant upgrades:
- Emissions: The QSM11 is a Tier III certified diesel engine, meeting stricter global environmental standards.
- Reliability: The heavy-duty 6-cylinder industrial diesel engine 10.8L design features reinforced components for a longer Mean Time Between Overhaul (MTBO).
- Fuel System: The transition to the high-pressure injection system in the QSM11-350 common rail equivalent (Celect) offers better atomization than mechanical M11 units.
QSM11-350 vs QSM11-300 and M11-C350 Comparison
QSM11-350 vs QSM11-300
- Higher horsepower (+50HP)
- Increased torque output
- Better suited for heavy-load operations
QSM11-350 vs M11-C350
- More advanced ECM control
- Improved fuel efficiency
- Lower emissions compliance (Tier III)
Key Applications: From Mining to Agriculture
The versatility of the 350HP Cummins QSM11 engine makes it the primary choice for several industries:
- Construction Equipment: Ideally suited as a QSM11-350 engine for excavator brands like XCMG, Sany, and LiuGong.
- Mining Equipment: Known as the best 350HP diesel engine for mining equipment, it handles the high-altitude and dusty environments of open-pit mines.
- Agriculture: A robust 6-cylinder Cummins QSM11-350 engine for agriculture used in large-scale tractors and harvesters.
Buying Guide
QSM11-350 New vs Rebuilt Engine Comparison
New engine:
- Full performance and lifespan
- Higher initial cost
Rebuilt engine:
- Lower cost
- Shorter lifecycle
Supply, Price, and Lead Time
As a professional supplier, HekoPower offers:
- Cummins QSM11-350 engine price and lead time transparency
- Typical lead time: 7–15 business days
- Export-ready packaging
- 12-month warranty
We support global customers looking to buy original Cummins QSM11-350 engine with stable supply.
Why Choose HekoPower as Your Supplier
- Genuine XCEC Cummins engines
- Competitive wholesale pricing
- Fast delivery worldwide
- Technical support and documentation
Cummins QSM11-Construction Diesel Engine Series, original products from Xi’an Cummins Joint Venture Plant (XCEC), since 1986, 50% owned by Cummins USA, under Cummins Technical & Product Line. This series mainly includes QSM11-290, QSM11-300, QSM11-335, QSM11-350, QSM11-360, QSM11-375, QSM11-400.
