Description
Isuzu 4BG1 Diesel Engine Assembly Overview
The Isuzu 4BG1 Diesel Engine Assembly (OEM Part Numbers: 4BG1, 4BG1T, 8-97103-670-0, 8-97148-527-0) manufactured by Tatan is a 4.329L 4-cylinder water-cooled engine belonging to our Diesel Engines & Engine Assemblies classification. Engineered specifically for Hitachi EX120-5, ZX120, ZX130, JCB JS130, and Kobelco SK120 12-to-14 ton excavators, replacing your worn engine with a Tatan complete 4BG1 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 injection pump, turbocharger (for 4BG1T variants), starter motor, and alternator, ensuring 100% direct bolt-on fitment with hydraulic pump couplings and mounting brackets.
Key Attributes & Technical Parameters
| Product Category | Diesel Engines & Assemblies | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Isuzu 4BG1 / 4BG1T Diesel Engine | Brand Name | Tatan |
| Compatible Equipment | Hitachi EX120/ZX120 | JCB JS130 | OEM Part Number | 4BG1 / 8-97103-670-0 |
| Engine Displacement | 4.329 Liters (4329 cc / 4.3L) | Cylinder Arrangement | 4 Cylinders Inline (I-4) 4-Stroke |
| Horsepower & RPM | 62-77.3 kW (83-105 HP) @ 2000-2500 | Cooling System | Water-Cooled / Liquid Cooled |
| Machinery Test Report | Provided (100% Dyno Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Aspiration Type | Naturally Aspirated / Turbocharged | 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 Isuzu, Tatan manufactures replacement complete diesel engines and overhaul components for leading machinery brands:
Application Scenarios & Buyer Value
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi EX120 / ZX120 Engine Replacement | Complete engine swap cuts machine repair downtime by up to 70% compared to internal rebuilding. |
| Excavator Overhaul Workshops | Eliminates tedious line-boring, sleeve replacement, and crank grinding; saves mechanic labor hours. |
| Engine Distributors & Stockists | Popular 4.3L medium excavator engine ready for immediate resale to plant hire fleets and repair networks. |
| Contractor Fleet Maintenance | Extends 12-to-14 ton excavator working lifespan and restores full digging hydraulic power under load. |
Isuzu 4BG1 Engine OEM Diagnostic & Troubleshooting Guide
Use this OEM manual diagnostic guide to troubleshoot operational engine symptoms on your 12-to-14 ton excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & dense white smoke | Low compression (<2.9 MPa) in multiple cylinders due to worn piston rings, liner wear, or glow plug circuit fault. | Replace with Tatan complete 4BG1 engine assembly or inspect glow plug system & compression pressure. |
| 2. Severe power loss & black smoke under hydraulic load | Mechanical fuel injection pump timing out of calibration or turbocharger turbine wear leading to low boost pressure (<1.1 bar). | Inspect turbocharger & injection pump timing, or replace with Tatan factory pre-set 4BG1/4BG1T engine. |
| 3. High engine oil consumption & heavy crankcase blow-by | Scored cylinder liners, stuck oil rings, or valve stem seal wear allowing engine oil into combustion chambers. | Install Tatan new 4BG1 complete engine; flush engine oil gallery and replace oil filter. |
| 4. Engine overheating & coolant surge into reservoir | Water pump impeller erosion, clogged radiator core, or blown cylinder head gasket leaking combustion gas into cooling jacket. | Replace thermostat (82°C), flush cooling system, or swap to a new 4BG1 complete engine assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan Isuzu 4BG1 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.
Isuzu 4BG1 Engine FAQ & Related Spare Parts
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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