The Cummins KT38-C925 is a 37.7L V12 heavy-duty industrial diesel engine rated at 690 kW / 925 HP at 2,100 RPM. With peak torque of approximately 4,095 N·m at 1,300 RPM, it is designed for mining equipment, large excavators, heavy cranes, drilling systems, industrial pump drives and other applications operating under sustained load.
The KT38-C925 uses the Cummins PT direct-injection fuel system with STC timing control. Its mechanical fuel-control architecture, replaceable wet cylinder liners, large-displacement V12 platform and 24V starting system make it suitable for equipment where maintainability, overhaul access and stable output are important.
The model designation alone is not sufficient to confirm a replacement engine. KT38-C925 configurations may differ in rated output, governor setting, turbocharger and intake arrangement, flywheel housing, engine mounts, cooling connections, electrical accessories and supplied equipment.
- 37.7L, V12, 4-stroke industrial diesel engine
- 690 kW / 925 HP at 2,100 RPM
- Approximately 4,095 N·m at 1,300 RPM
- Cummins PT direct-injection fuel system with STC
- Replaceable wet cylinder liners
- 24V electric starting system
- CPL reference 0810
- Configuration reference C-4414-A
- Performance-curve reference C-602
Need to replace an existing KT38 or K38-series engine? Send the engine nameplate, ESN, CPL and machine model for configuration verification.
Confirm the Correct KT38-C925 Before Ordering
Engines sharing the KT38-C925 designation may still be prepared for different machines and operating conditions. Before quotation, the original engine data and installation interfaces should be reviewed.
| Verification Item | What Must Be Confirmed |
|---|---|
| Engine Model | Confirm that the existing engine is KT38-C925 rather than a KTA38, KTAA38 or another K38-series configuration. |
| Engine Serial Number | Provide the ESN to identify the original production specification and compatible parts. |
| CPL Reference | Check whether the original engine corresponds to CPL 0810 or another approved CPL. |
| Configuration Code | Compare the original build with reference configuration C-4414-A. |
| Performance Curve | Confirm the required power and torque curve against reference C-602 or the final engine datasheet. |
| Rated Speed | Verify whether the machine requires the 2,100 RPM configuration or another industrial speed setting. |
| Flywheel and Housing | Confirm the SAE housing, flywheel, coupling, transmission or driven-equipment interface. |
| Mounting Arrangement | Check engine-mount positions, brackets, installation space and centre-of-gravity requirements. |
| Air and Exhaust System | Confirm turbocharger orientation, air-cleaner connections, exhaust outlet and intake arrangement. |
| Cooling System | Confirm radiator capacity, fan drive, coolant connections and whether an aftercooler circuit is required. |
| Electrical System | Verify starter, alternator, shutdown controls, sensors and machine wiring. |
| Accessory Scope | Confirm whether the quotation includes the starter, alternator, flywheel, radiator, air cleaner, muffler, clutch, control system or complete power pack. |
A replacement engine should be selected by ESN, CPL, configuration and installation interface rather than horsepower or equipment model alone.
Cummins KT38-C925 Technical Specifications
Core Engine Data
| Parameter | Reference Specification |
|---|---|
| Engine Model | KT38-C925 |
| Engine Type | 4-stroke, V12 industrial diesel engine |
| Displacement | 37.7 L |
| Bore × Stroke | 159 × 159 mm |
| Compression Ratio | 13.9:1 for the referenced configuration |
| Fuel System | Cummins PT direct-injection system with STC timing control |
| Induction System | Turbocharged; final charge-air cooling arrangement must be confirmed by CPL and engine datasheet |
| Cooling Method | Water cooled |
| Cylinder Liners | Replaceable wet liners |
| Listed Emission Reference | Euro II / Tier II reference; confirm the final engine configuration and destination requirements |
| Manufacturing Platform | Chongqing Cummins Engine Company |
| CPL Reference | 0810 |
| Configuration Reference | C-4414-A |
| Performance-Curve Reference | C-602 |
Power and Torque Data
| Parameter | Reference Specification |
|---|---|
| Rated Output | 690 kW / 925 HP at 2,100 RPM |
| Maximum Torque | 4,095 N·m / 3,020 lb·ft at 1,300 RPM |
| Reference Torque at 1,800 RPM | 3,089 N·m / 2,278 lb·ft |
| Rated Speed | 2,100 RPM |
| Idle Speed | Approximately 625 RPM |
| Specific Fuel Consumption | Approximately 214–215 g/kW·h at the referenced operating point |
| Reference Operating Altitude | Up to approximately 2,000 m before application-specific derating review |
| Minimum Starting Temperature | Approximately -12°C without auxiliary starting equipment |
At 690 kW and 214–215 g/kW·h, calculated full-load fuel consumption is approximately 148 kg per hour. Using a reference diesel density of 0.83 kg/L, this equals roughly 178 litres per hour. Actual consumption varies with load factor, altitude, ambient temperature, fuel density and engine condition.
Cooling and Electrical Data
| Parameter | Reference Specification |
|---|---|
| Electrical System | 24V DC |
| Starting System | 24V electric starter |
| Cooling Method | Water-cooled engine with application-specific radiator and fan package |
| Engine-Circuit Coolant Reference | Approximately 31 L; total installed circuit capacity depends on radiator and hose layout |
| Cylinder-Liner Design | Replaceable wet cylinder liners |
Dimensions and Weight
| Parameter | Reference Specification |
|---|---|
| Engine Dimensions | 2003 × 1362 × 1661 mm |
| Reference Dry Weight | Approximately 3,606 kg |
| Reference Wet Weight | Approximately 4,016 kg |
| Reference Packing Dimensions | 2300 × 1700 × 2000 mm |
| Final Shipping Weight | To be confirmed according to the actual accessory package, crate and packing list |
The dry weight, wet weight and shipping weight describe different engine conditions. Lifting plans, freight calculations and installation drawings must use the weight stated in the final approved packing list.
Typical KT38-C925 Applications
The KT38-C925 is considered for large machines and industrial systems that require substantial low-speed torque, mechanical fuel control and rebuildable heavy-duty engine architecture.
| Application | Why the KT38-C925 Is Considered |
|---|---|
| Mining Dump Trucks | The V12 platform provides high output and torque for loaded haul cycles and uneven mine roads. |
| Large Hydraulic Excavators | Strong torque reserve supports large hydraulic pumps during digging, lifting and swing operations. |
| Heavy Cranes | Suitable for selected machines with high hydraulic demand and repeated lifting cycles. |
| Bulldozers and Graders | Low-speed torque supports continuous earthmoving, pushing and grading loads. |
| Drilling Equipment | Can supply compressors, rotary systems and hydraulic circuits under changing ground resistance. |
| Industrial Pump Drives | May be used for large water, slurry and process-pump packages after speed and coupling verification. |
| Oilfield Equipment | Suitable for selected pumping, drilling and industrial power packages after configuration review. |
| Configured Power Packs | Can be supplied with cooling, filtration, exhaust, monitoring and skid components for project-specific installations. |
References to BELAZ, TEREX, Komatsu and other equipment families should be treated as application examples. Direct installation must be confirmed using the machine model, original engine nameplate and installation drawings.
KT38, KTA38 and KTAA38: Important Configuration Differences
The KT38, KTA38 and KTAA38 families share the general K38 V12 architecture, but their air-handling systems, output ratings, cooling requirements and installation packages can differ.
| Engine Family | Reference Configuration | Typical Selection Consideration |
|---|---|---|
| KT38-C925 | 690 kW / 925 HP at 2,100 RPM; turbocharged configuration | Selected where the original machine requires the KT38 output curve and corresponding installation package. |
| KTA38-C1100 | Reference output around 1,101 HP with an aftercooled configuration | Considered for higher output or installations originally designed for KTA38 cooling and intake systems. |
| KTAA38 Series | Higher-output K38 configurations with application-specific charge-air cooling | Requires additional review of cooling capacity, installation space, drivetrain limits and machine approval. |
A KTA38 or KTAA38 should not be treated as a simple horsepower upgrade for a KT38 installation. The radiator, charge-air cooling system, driveline, flywheel housing, mounting and accessory requirements must be reviewed first.
KT38-C925 Replacement Compatibility
The KT38-C925 may be used as a replacement for selected machines already operating a compatible K38-series engine. It is not a universal drop-in replacement.
| Compatibility Area | Required Review |
|---|---|
| Base Engine | Confirm the original engine family, displacement, rotation and performance configuration. |
| Power Calibration | Match the rated output, rated speed, torque curve and governor setting. |
| Flywheel Housing | Verify the SAE housing, flywheel, coupling and driven-equipment interface. |
| Engine Mounts | Compare mounting positions, brackets, dimensions and load distribution. |
| Cooling Package | Confirm radiator capacity, fan drive, coolant outlets and charge-air cooling requirements. |
| Air and Exhaust | Check intake restriction, air-cleaner position, turbo orientation and exhaust connection. |
| Electrical System | Confirm the starter, alternator, sensors, shutdown system and machine wiring. |
| Accessory Package | Check pumps, compressor, filters, clutch, power take-off and optional equipment. |
For replacement projects, provide clear photos of the original engine, nameplate, flywheel housing, mounting brackets, coolant connections and electrical components before quotation.
Why the PT Fuel System Is Used in Heavy-Duty Applications
The Cummins PT system meters fuel according to fuel pressure and injection timing. It uses mechanically actuated injectors and does not depend on a modern electronic engine-control module for basic fuel metering.
This relatively straightforward architecture can simplify field diagnosis and overhaul work in remote mining, construction and industrial locations. Fuel cleanliness, pump calibration, injector condition and correct timing remain essential to reliable operation.
Replaceable Wet Liners and Overhaul Value
The KT38-C925 uses replaceable wet cylinder liners that contact the engine coolant directly. During overhaul, worn liners can be replaced without replacing the complete cylinder block.
This design supports in-frame repair and complete overhaul programs, helping operators extend engine service value where equipment downtime and complete engine replacement are expensive.
Maintenance Planning
Maintenance intervals should follow the operation and maintenance manual supplied for the final ESN and CPL. Fixed intervals should be adjusted according to dust level, average load, ambient temperature, fuel quality, oil analysis and operating hours.
Typical maintenance checkpoints include:
- Engine oil level, oil condition and oil-filter replacement
- Fuel-filter inspection and water removal
- Air-filter restriction and intake-system inspection
- Coolant concentration, coolant level and hose condition
- Drive-belt tension and pulley inspection
- Turbocharger inlet, exhaust and oil-line inspection
- PT fuel-pump and injector condition
- Valve-clearance inspection according to the engine manual
- Engine mounts, fuel lines and electrical connections
- Oil-analysis and coolant-analysis review for high-hour engines
High-dust mining and quarry environments normally require shorter air- and fuel-filter service intervals than clean industrial installations.
Parts and Overhaul Support
ZEB Power can supply Cummins KT38 and K38-series engine parts together with the complete engine or separately for maintenance and overhaul projects.
- PT fuel pumps and injectors
- STC components and fuel-system parts
- Turbocharger components
- Cylinder heads and valve-train parts
- Pistons, wet liners and piston rings
- Main and connecting-rod bearings
- Water pumps and cooling-system components
- Oil pumps and lubrication components
- Gasket and seal kits
- In-frame overhaul kits
- Complete overhaul kits
- Filters and routine maintenance kits
Parts must be selected by ESN, CPL, configuration code and individual part number. Components from another K38 output level or application are not automatically interchangeable.
Supply, Packaging and Export Information
The final quotation should clearly identify the engine condition, production source, CPL, configuration, rated output, accessory scope, documentation, packaging and shipping terms.
| Commercial Item | Reference Information |
|---|---|
| Supply Type | Complete engine, replacement engine, project spare, engine parts or configured power pack |
| Lead Time | Normally 15–30 business days, depending on stock, configuration and accessory requirements |
| Payment Terms | T/T or L/C, subject to order confirmation |
| Trade Terms | FOB / CIF / CFR / EXW |
| Port of Loading | Shenzhen or another confirmed China port |
| Reference Packing Dimensions | 2300 × 1700 × 2000 mm |
| Final Gross Weight | Confirmed according to the supplied accessories and approved packing list |
| Packaging | Reinforced export wooden crate with moisture and transit protection |
| Documentation | Commercial invoice, packing list, bill of lading, operation documentation and parts information when included |
| Optional Supply | Radiator, air cleaner, muffler, clutch, monitoring system, skid frame, maintenance kit or complete power pack |
Warranty and Technical Support
Warranty coverage should follow the confirmed sales contract and final supplied configuration. Warranty normally applies to manufacturing defects under correct installation, approved operation, suitable fuel and lubricants and proper maintenance.
- Reference warranty: 12 months or 1,000 operating hours, whichever comes first, subject to the sales contract
- Pre-sale support: engine, equipment and installation-configuration review
- Installation support: interface review, commissioning guidance and technical documentation
- Claim information: ESN, CPL, operating hours, fault description, photos, videos and maintenance records
- Typical exclusions: incorrect installation, overheating, contaminated fuel, lubrication failure, overload and unauthorized modification
Frequently Asked Questions
What is the difference between KT38-C925 and KTA38-C1100?
Both belong to the K38 V12 family, but they use different air-handling, cooling and power configurations. The KTA38-C1100 is a higher-output aftercooled version. It should not replace a KT38-C925 without checking the radiator, aftercooler circuit, flywheel housing, drivetrain and installation space.
Does the KT38-C925 use an intercooler?
The supplied source contained conflicting descriptions of the intake system. The KT designation is generally associated with a turbocharged configuration, while KTA and KTAA variants use additional charge-air cooling arrangements. The exact KT38-C925 intake package must be confirmed through CPL 0810, configuration C-4414-A and the final engine datasheet.
What machines use the KT38-C925?
It is considered for mining trucks, large excavators, cranes, drilling rigs, industrial pumps and heavy earthmoving equipment. Equipment-brand references are application examples and do not guarantee direct installation.
What is the approximate full-load fuel consumption?
Using 690 kW and 214–215 g/kW·h, calculated fuel use is approximately 148 kg/h or about 178 L/h at a reference diesel density of 0.83 kg/L. Actual consumption depends on the operating load and site conditions.
Can the KT38-C925 operate above 2,000 metres?
Operation above the listed reference altitude may require power derating or a different engine and cooling configuration. Site altitude, ambient temperature, duty cycle and required output should be reviewed before selection.
Can the engine be supplied as a complete power pack?
Yes. A configured package may include the engine, radiator, air cleaner, exhaust silencer, monitoring system, skid frame and selected accessories. The package must be designed around the driven equipment and installation environment.
Can KT38-C925 parts be ordered separately?
Yes. Engine parts, including PT fuel components, overhaul kits, cylinder-head parts, wet liners, bearings, pumps, seals and filters, can be quoted after ESN and CPL confirmation.
What information is required for a quotation?
Provide the machine model, original engine nameplate, ESN, CPL, rated power, rated speed, flywheel-housing information, required accessories, quantity and destination.
Request a KT38-C925 Quotation
For a replacement engine or power-pack quotation, provide enough information to identify the exact application and installation configuration.
Please send:
- Machine brand and model
- Original engine nameplate photo
- Engine serial number
- CPL and configuration code
- Current rated power and rated speed
- Flywheel-housing and driven-equipment information
- Engine-mount and installation photos
- Cooling and electrical-system requirements
- Required accessories or complete power-pack scope
- Quantity
- Destination country and port
- Required delivery schedule
Contact ZEB Power for KT38-C925 configuration verification, pricing, stock and export delivery.
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