Description
Komatsu 6D125 Diesel Engine Assembly Overview
The Komatsu 6D125 Diesel Engine Assembly (OEM Part Numbers: 6D125, S6D125, S6D125-1, 6150-11-1100, 6150-01-1000) manufactured by Tatan is an 11.04L 6-cylinder turbocharged water-cooled engine belonging to our Diesel Engines & Engine Assemblies classification. Engineered specifically for Komatsu PC400-3, PC400-5, PC400LC-5, and PC450-5 35-to-40 ton heavy excavators, replacing your worn engine with a Tatan complete 6D125 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 mechanical Zexel/Bosch PE fuel injection pump, turbocharger, starter motor, and alternator, ensuring 100% direct bolt-on fitment with hydraulic pump couplings and mounting brackets.
Key Attributes & Parameters for Komatsu 6D125 Diesel Engine Assembly
| Product Category | Diesel Engines & Assemblies | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Komatsu 6D125 / S6D125 Engine | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC400-5 | PC450-5 | OEM Part Number | 6D125 / 6150-11-1100 |
| Engine Displacement | 11.04 Liters (11040 cc / 11.0L) | Cylinder Arrangement | 6 Cylinders Inline (I-6) 4-Stroke |
| Horsepower & RPM | 194-235 kW (260-315 HP) @ 1800-2100 | Cooling System | Water-Cooled / Liquid Cooled |
| Machinery Test Report | Provided (100% Dyno Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Aspiration Type | Turbocharged & Charge Air Intercooled | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Engine | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Engine Parts Coverage
In addition to Komatsu, Tatan manufactures replacement complete diesel engines and overhaul components for leading machinery brands:
Application Scenarios & Buyer Value
When upgrading or replacing your 35-to-40 ton heavy excavator engine with our Komatsu 6D125 Diesel Engine Assembly, buyers achieve maximum operational uptime and power efficiency:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC400-5 / PC450-5 Engine Swap | Complete engine swap cuts machine repair downtime by up to 70% compared to internal rebuilding. |
| Excavator Overhaul Workshops | Eliminates tedious line-boring, sleeve honing, and crank fitting; saves mechanic labor hours. |
| Engine Distributors & Stockists | High-demand 11.0L heavy excavator engine ready for immediate resale to plant hire fleets and mining networks. |
| Rental Fleet Maintenance | Extends 35-to-40 ton excavator working lifespan and restores full digging hydraulic torque under load. |
Komatsu 6D125 Diesel Engine Assembly OEM Diagnostic Guide
Use this OEM manual diagnostic guide to troubleshoot operational engine symptoms on your Komatsu heavy excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & dense white smoke | Mechanical PE fuel injection pump timing retarded or low compression (<2.8 MPa) in 6 cylinders due to piston ring wear. | Adjust Zexel/Bosch PE pump timing or replace with Tatan complete 6D125 engine assembly. |
| 2. Severe power loss & dense black smoke under digging load | Turbocharger wastegate failure leading to low boost (<1.2 bar) or fuel injection pump governor spring fatigue. | Inspect turbocharger boost pressure or swap to a Tatan factory pre-tested 6D125 engine assembly. |
| 3. High engine oil consumption & heavy crankcase blow-by | Scored 11.0L cylinder liners, stuck oil rings, or valve stem seal wear allowing engine oil into combustion chambers. | Install Tatan new 6D125 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 6D125 complete engine assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan Komatsu 6D125 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.
Komatsu 6D125 Engine FAQ & Related Categories
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* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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