Cummins QSM11-400 Diesel Engine 400HP Construction Engine
6-cylinder in-line diesel engine for excavators, wheel loaders, cranes, drill rigs and other off-highway machines, supplied as the Cummins QSM11-400 at 298 kW (400 HP) at 2100/1800 rpm Max Torque/Speed (2100): 1898 N.m @ 1400 rpm from 10.8 L.
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What This Engine Is Built For
MEP Power supplies the Cummins QSM11-400 as a complete 6-cylinder in-line construction diesel engine of 10.8 L running a 125 * 147 mm bore and stroke. It is rated at 298 kW (400 HP) at 2100/1800 rpm Max Torque/Speed (2100): 1898 N.m @ 1400 rpm. The engine is turbocharged & charge air cooled and water cooled, with a Common Rail High Pressure Injection fuel system. It is built at the Chongqing Cummins Plant and carries Tier III. Typical duty is excavators, wheel loaders, cranes, drill rigs and other off-highway machines; dry weight with flywheel and alternator is 984 Kg and the overall envelope is 1306mm*914mm*1280mm.
Key Benefits
- Delivers 298 kW (400 HP) at 2100/1800 rpm Max Torque/Speed (2100): 1898 N.m @ 1400 rpm from 10.8 L as a factory-rated assembly.
- Turbocharged & Charge Air Cooled induction with water cooling keeps charge temperature under control in continuous duty.
- Supplied to Tier III, so the unit can be registered in markets that require it.
- Dry weight 984 Kg and envelope 1306mm*914mm*1280mm are published so the installation can be checked before ordering.
- Published fuel consumption of 217 g/kw.h makes running cost predictable.
- Starts without auxiliary aids down to -12℃/-25℃.
Application Scenarios
- 20-35 t excavator power unit replacement
- Wheel loader and grader repower
- Crawler crane and drill rig drive
- Concrete pump and batching plant drive
Who It Is For
- Excavator and loader rebuilders replacing a failed power unit
- Plant hire fleets that need machines back on rent quickly
- OEM machine builders sourcing a proven engine for a new chassis
- Quarry and earthmoving contractors running machines in dusty, high-load duty
Problems It Solves
- A machine down in the middle of a job stops the whole site, not just one asset.
- Rebuilt short blocks of unknown history fail again inside the warranty window.
- Dust, vibration and long hours at high load expose any weakness in the power unit.
- Identifying the right QSM11-400 variant from a serial number takes experience; MEP Power checks the configuration before quoting.
Specification As Published
Values below are the published data for this unit. Where a figure is not listed it was not stated by the source data sheet; ask and we will confirm before you order.
| Model | QSM11-400 |
| Type | 6 Cylinders in Line |
| Displacement | 10.8 L |
| Bore x Stroke | 125 * 147 |
| Engine Configuration Number | D353020CX03 |
| Net Weight (with flywheel and alternator) | 984 Kg |
| Overall Dimension | 1306mm*914mm*1280mm |
| Manufacturing Plant | Chongqing Cummins Plant |
| Rated Power/Speed | 298 kW/400HP |
| Fuel Consumption at Rated Power | 217 g/kw.h |
| Certification | Tier III |
| Aspiration | Turbocharged & Charge Air Cooled |
| Fuel System | Common Rail High Pressure Injection |
| Compression Ratio | 16.3:1 Control System: Full Electronic Control System(ECM) |
| Electrical System (starter motor/alternator) | 12V/24V |
| Lowest Starting Temp (without auxiliary system) | -12℃/-25℃ |
| Engine Cooling Fluid Volume | 9.5 L |
| Cooling Method | Water Cooled |
| Rated Speed | 2100/1800 rpm Max Torque/Speed (2100): 1898 N.m @ 1400 rpm |
Technical Features
- Cylinders: 6 Cylinders in Line
- Displacement: 10.8 L
- Bore and stroke: 125 * 147
- Aspiration: Turbocharged & Charge Air Cooled
- Fuel system: Common Rail High Pressure Injection
- Electrical system: 12V/24V
- Compression ratio: 16.3:1 Control System: Full Electronic Control System(ECM)
- Coolant capacity: 9.5 L
Quality Control
- Every engine is inspected by the MEP Power inspection team before it leaves the warehouse
- Engine, configuration and serial numbers are recorded and photographed for the buyer
- Genuine and OEM units are quoted separately so the buyer knows exactly what is supplied
- Warranty on genuine and OEM new engines and generator sets is one year or 1000 hours, whichever comes first; parts and repair labour are covered for quality faults inside that period.
Use and Installation Guide
- Quote the model QSM11-400 and the engine configuration number D353020CX03 when ordering so the correct variant is supplied.
- Confirm flywheel housing, SAE size and pump drive against the machine
- Transfer the machine's own wiring harness only after checking the connector layout
- Run the first 50 hours at moderate load before full-duty work
- Keep the warranty terms in mind: one year or 1000 hours, whichever comes first.
Customisation Options
- OEM and ODM builds, including your logo and company name on the unit
- Cummins engine customisation and modification to your requirement
- Mining and special explosion-proof builds
- Genuine or OEM parts specified on the quotation
How It Compares
| Compared with | What to consider |
|---|---|
| A rebuilt or used engine of the same rating | A rebuilt unit may show the same 298 kW (400 HP) on paper, but its running history is unknown and the warranty rarely covers the whole engine. |
| A larger engine in the same QSM11 range | Moving up a frame size adds weight, envelope and fuel burn; specify the next size up only if the duty cycle really needs the headroom. |
| A non-Cummins engine of similar output | Parts and service for Cummins families are available in most markets, which matters more over ten years than the purchase price on day one. |
QSM11-400 Questions
Is this QSM11-400 a genuine Cummins engine
What power does the QSM11-400 produce
What warranty comes with the engine
How do I confirm this is the right variant for my machine
How is the engine shipped and what payment terms apply
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View specificationQuote The QSM11-400
Send your serial number or nameplate photograph and we will confirm the configuration, then price genuine and OEM options side by side.