Description
6WG1 YA00005377 Engine Assembly Overview
The 6WG1 YA00005377 Engine Assembly manufactured by Tatan is a heavy-duty 15.681L 6-cylinder turbocharged water-cooled diesel powerplant belonging to our Diesel Engine Assembly classification. Engineered specifically for Hitachi ZX870-5G, ZX870LC-5G, ZX870H, and ZX870-3 85-90 ton heavy mining excavators, swapping your fatigued powerplant with this complete 6WG1 YA00005377 Engine Assembly unit eliminates costly jobsite downtime, severe crankcase blow-by, and hydraulic stall under continuous 90-ton rock breakout cycles.
Built strictly according to original Isuzu OEM specifications, this complete engine assembly is pre-fitted with a high-pressure common rail fuel system, heavy wastegate turbocharger, 24V starter motor, and alternator, ensuring 100% direct mechanical alignment with Hitachi dual main hydraulic pump dampener couplings and engine mounting brackets.
Key Attributes & Parameters for 6WG1 YA00005377 Engine Assembly
| Product Category | Diesel Engine Assembly | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Isuzu BB-6WG1XQA-04 / AH-6WG1XYSA-03 Heavy Engine | Brand Name | Tatan |
| Compatible Equipment | Hitachi ZX870-5G | ZX870H | ZX870LC-5G | OEM Part Number | YA00005377 / 4637167 / 1-11110-877-0 |
| Engine Displacement | 15.681 Liters (15681 cc / 15.7L) | Cylinder Arrangement | 6 Cylinders Inline (I-6) 4-Stroke OHC 24V |
| Horsepower & RPM | 397 kW (540 HP) @ 1800 RPM (2250 N·m Torque) | Cooling System | Heavy-Duty Water-Cooled / Radiator |
| Machinery Test Report | Provided (100% Dyno Tested under Load) | Video Outgoing-Inspection | Provided Before Shipping |
| Aspiration Type | Turbocharged & Charge-Air Cooled | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Engine Assembly | Packaging | Export Reinforced Wooden Box Packaging |
Supported Machinery Brands & Engine Coverage
In addition to Isuzu, Tatan manufactures replacement complete diesel engines and overhaul components for leading machinery brands:
Application Scenarios & Buyer Value
When rebuilding or replacing aging powerplants with our 6WG1 YA00005377 Engine Assembly, workshops and equipment owners eliminate repetitive downtime:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi ZX870 Engine Replacement | Swapping to the 6WG1 YA00005377 Engine Assembly cuts machine repair downtime by up to 75% compared to trial-and-error field block rebuilding. |
| Heavy Mining Overhaul Centers | Avoids the high cost and failure rate of line-boring cracked main bearing saddles and grinding undersized crankshafts on high-hour 15.7L blocks under 90-ton loads. |
| Quarry & Hard-Rock Excavation Fleets | Restores full 397 kW high-stall torque, driving dual main hydraulic pumps simultaneously without engine RPM dipping under massive 4.5 m³ bucket penetration. |
| International Machinery Stockists | Ready-to-ship replacement engine inventory for overseas contractors maintaining working fleets of classic 90-ton Hitachi machinery. |
6WG1 YA00005377 Engine Assembly OEM Diagnostic Guide
Use this technical diagnostic guide to identify engine failures on your Hitachi ZX870 excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & dense white unburned fuel smoke | Common rail fuel pressure build-up delayed or cylinder compression falling below 2.9 MPa due to 147 mm piston ring and liner wear. | Adjust injection timing or replace with a complete 6WG1 YA00005377 Engine Assembly. |
| 2. Severe RPM drop & heavy black smoke under hydraulic load | Turbocharger wastegate failure leading to low manifold boost pressure (< 1.4 bar) or fuel injection metering valve fatigue. | Inspect turbocharger boost pressure or swap to a factory pre-tested complete replacement engine. |
| 3. Excessive oil consumption & high crankcase blow-by pressure | Scored 15.7L cylinder liners, stuck oil scraper rings, or deteriorated valve stem seals allowing engine oil into combustion chambers. | Install a new complete engine assembly; flush oil cooler lines and replace oil filter cartridges. |
| 4. Engine coolant overheating & continuous radiator bubbling | Water pump impeller cavitation erosion, clogged radiator core tubes, or cylinder head gasket leaking high-pressure combustion gas into the water jacket. | Replace thermostat (82°C), flush cooling system, or install a brand new complete engine unit. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan 6WG1 engine assembly is preserved with anti-corrosion fluid, sealed in heavy poly film, and strapped inside an export-grade reinforced wooden crate.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for 3-7 day express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy 15.7L engine assemblies and bulk fleet orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with custom high-density foam inserts to prevent shipping shock.
Quality Control & International Certificates
Tatan hydraulic and engine components are manufactured under ISO 9001 certified quality control systems and strictly comply with CE industrial safety directives.
6WG1 YA00005377 Engine FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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