Description
S4D102E-1 6732-11-1100 Engine Assembly Overview
The S4D102E-1 6732-11-1100 Engine Assembly manufactured by Tatan is a 3.922L 4-cylinder turbocharged water-cooled diesel engine belonging to our Diesel Engine Assembly classification. Engineered specifically for Komatsu PC120-6, PC120LC-6, and PC130-6 12-to-13 ton excavators, replacing your worn engine with a Tatan complete assembly eliminates machine downtime, excessive blow-by, and severe hydraulic power loss instantly.
Built strictly according to original Komatsu OEM specifications, this complete engine assembly comes pre-assembled with direct injection pump, turbocharger, fuel injectors, starter motor, and alternator, ensuring 100% direct bolt-on fitment with hydraulic pump couplings and engine mount brackets.
Key Attributes & Parameters for S4D102E-1 6732-11-1100 Engine Assembly
| Machine Model (适用机型) | Komatsu PC120-6 | PC120LC-6 | PC130-6 Excavator | ||
| Engine Model (适用发动机) | Komatsu S4D102E-1 | 4D102E-1 | Cummins 4BT3.9 Engine | ||
| Product Category | Diesel Engine Assembly | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Komatsu S4D102E-1 Turbo Engine | Brand Name | Tatan |
| OEM Part Number | S4D102E-1 / 6732-11-1100 | Place of Origin | Guangdong, China |
| Engine Displacement | 3.922 Liters (3920 cc / 3.9L) | Cylinder Arrangement | 4 Cylinders Inline (I-4) 4-Stroke |
| Horsepower & RPM | 64.0-66.0 kW (86-89 HP) @ 2200 RPM | Cooling System | Water-Cooled / Liquid Cooled |
| Machinery Test Report | Provided (100% Dyno Tested) | Video Inspection | Provided Before Shipping |
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 replacing your excavator engine with our S4D102E-1 6732-11-1100 Engine Assembly, buyers achieve maximum operational uptime and power efficiency:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC120-6 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 3.9L excavator engine ready for immediate resale to plant hire fleets and repair networks. |
| Rental Fleet Maintenance | Extends 12-to-13 ton excavator working lifespan and restores full digging hydraulic torque under load. |
S4D102E-1 6732-11-1100 Engine Assembly OEM Diagnostic Guide
Use this OEM manual diagnostic guide to troubleshoot operational engine symptoms on your Komatsu PC120-6 excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & dense white smoke | Mechanical injection pump timing retarded or low compression (<2.8 MPa) in 4 cylinders due to piston ring wear. | Adjust injection pump timing or replace with Tatan complete S4D102E-1 engine assembly. |
| 2. Severe power loss & black smoke under hydraulic load | Turbocharger wastegate failure or fuel injection pump governor spring fatigue causing incomplete combustion. | Inspect turbocharger boost pressure or swap to a Tatan factory pre-tested S4D102E-1 complete engine. |
| 3. High engine oil consumption & heavy crankcase blow-by | Scored 3.9L cylinder liners, stuck oil rings, or valve stem seal wear allowing engine oil into combustion chambers. | Install Tatan new S4D102E-1 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 S4D102E-1 complete engine assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan S4D102E-1 6732-11-1100 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.

S4D102E-1 6732-11-1100 Engine FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.











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