Description
Cummins QSK23-C Diesel Engine Assembly Overview
The Cummins QSK23-C Diesel Engine Assembly (OEM Part Numbers: QSK23-C, QSK23, 4089859, 4955720, 2864029) manufactured by Tatan is a 23.15L 6-cylinder turbocharged water-cooled engine belonging to our Diesel Engine Assembly classification. Engineered specifically for Komatsu PC1250-7, PC1250-8, PC1250LC-8, and WA900-3 120-to-140 ton ultra-heavy mining excavators, replacing your worn engine with a Tatan complete QSK23-C assembly eliminates machine downtime, excessive blow-by, and severe hydraulic power loss instantly.
Built strictly according to original OEM specifications, this complete engine assembly comes pre-assembled with HPI high-pressure fuel injection system, Holset turbocharger, starter motor, and alternator, ensuring 100% direct bolt-on fitment with hydraulic pump couplings and mounting brackets.
Key Attributes & Parameters for Cummins QSK23-C Diesel Engine Assembly
| Product Category | Diesel Engine Assembly | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Cummins QSK23-C / QSK23 Engine | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC1250-7 | PC1250-8 | OEM Part Number | QSK23-C / 4089859 |
| Engine Displacement | 23.15 Liters (23150 cc / 23.1L) | Cylinder Arrangement | 6 Cylinders Inline (I-6) 4-Stroke |
| Horsepower & RPM | 560-708 kW (750-950 HP) @ 1800-2100 | Cooling System | Water-Cooled / Liquid Cooled |
| Fuel Injection System | High-Pressure HPI Electronic Fuel Injection | Aspiration Type | Turbocharged & Charge Air Aftercooled |
| Machinery Test Report | Provided (100% Dyno Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Quality Status | 100% Brand New Engine | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Engine Parts Coverage
In addition to Cummins, Tatan manufactures replacement complete diesel engines and overhaul components for leading machinery brands:
Application Scenarios & Buyer Value
When upgrading or replacing your 120-to-140 ton ultra-heavy mining excavator engine with our Cummins QSK23-C Diesel Engine Assembly, buyers achieve maximum operational uptime and power efficiency:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC1250-7 / PC1250-8 Engine Swap | Complete engine swap cuts machine repair downtime by up to 70% compared to internal rebuilding. |
| Excavator Overhaul Workshops | Eliminates tedious HPI injector timing, liner honing, and crank fitting; saves mechanic labor hours. |
| Engine Distributors & Stockists | High-demand 23.1L mining excavator engine ready for immediate resale to plant hire fleets and mining networks. |
| Rental Fleet Maintenance | Extends 120-to-140 ton excavator working lifespan and restores full digging hydraulic torque under load. |
Cummins QSK23-C Diesel Engine Assembly OEM Diagnostic Guide
Use this OEM manual diagnostic guide to troubleshoot operational engine symptoms on your 120-ton mining excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & HPI Fuel Pressure Fault | HPI fuel injector wear or fuel actuator valve pressure drop below OEM limit (<0.4 MPa). | Inspect fuel actuator valve & ECM signals, or replace with Tatan complete Cummins QSK23-C engine assembly. |
| 2. Severe power loss & dense black smoke under digging load | Holset turbocharger wastegate failure leading to low boost (<1.5 bar) or HPI injector nozzle tip fouling. | Inspect turbocharger boost pressure or swap to a Tatan factory pre-tested QSK23-C engine assembly. |
| 3. High engine oil consumption & heavy crankcase blow-by | Scored 23.1L cylinder liners, stuck oil rings, or valve stem seal wear allowing engine oil into combustion chambers. | Install Tatan new QSK23-C complete engine; flush engine oil gallery and replace oil filter. |
| 4. Engine overheating & coolant surge into expansion tank | Water pump impeller erosion, clogged radiator core, or cylinder head gasket leaking combustion gas into cooling jacket. | Replace thermostat (82°C), flush cooling system, or swap to a new Cummins QSK23-C complete engine assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan Cummins QSK23-C engine assembly undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy engine assemblies and bulk orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with thick shockproof foam lining for maximum safety.
Quality Control & International Certificates
Tatan diesel engines are manufactured under ISO 9001 quality management systems and strictly comply with CE safety standards.
Cummins QSK23-C Engine FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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