Description
H06C-T 4251850 Engine Assembly Overview
The H06C-T 4251850 Engine Assembly manufactured by Tatan is a 6.490L 6-cylinder turbocharged water-cooled diesel powerplant belonging to our Diesel Engine Assembly classification. Engineered specifically for Hitachi EX220-2, EX220LC-2, and EX220-2m 22-ton excavators, swapping your fatigued powerplant with this complete H06C-T 4251850 Engine Assembly unit eliminates machine downtime, excessive crankcase blow-by, and hydraulic power starvation under heavy continuous digging loads.
Built strictly according to original Hino OEM specifications, this complete engine assembly comes pre-assembled with mechanical in-line injection pump, turbocharger, starter motor, and alternator, ensuring 100% direct bolt-on fitment with Hitachi dual hydraulic pump couplings and mounting brackets.
Key Attributes & Parameters for H06C-T 4251850 Engine Assembly
| Product Category | Diesel Engine Assembly | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Hino H06C-T / H06CT Turbo Engine | Brand Name | Tatan |
| Compatible Equipment | Hitachi EX220-2 | EX220LC-2 Excavator | OEM Part Number | H06C-T / 4251850 / 4281929 |
| Engine Displacement | 6.490 Liters (6490 cc / 6.5L) | Cylinder Arrangement | 6 Cylinders Inline (I-6) 4-Stroke |
| Horsepower & RPM | 118 kW (160 HP) @ 2100 RPM | Cooling System | Heavy-Duty Water-Cooled / Liquid Cooled |
| Machinery Test Report | Provided (100% Dyno Tested under Load) | Video Outgoing-Inspection | Provided Before Shipping |
| Aspiration Type | Turbocharged (废气涡轮增压) | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Engine Assembly | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Engine Coverage
In addition to Hino, 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 H06C-T 4251850 Engine Assembly, workshops and equipment owners eliminate repetitive downtime:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi EX220-2 Engine Replacement | Swapping to the H06C-T 4251850 Engine Assembly cuts machine repair downtime by up to 75% compared to trial-and-error field block rebuilding. |
| Excavator Overhaul Workshops | Avoids the high cost and failure rate of line-boring cracked main bearing saddles and grinding undersized crankshafts on high-hour blocks. |
| Quarry & Heavy Earthmoving Fleets | Restores full 118 kW high-stall torque, driving dual main hydraulic pumps simultaneously without engine RPM dipping under heavy 22-ton bucket loads. |
| International Machinery Stockists | Ready-to-ship replacement engine inventory for overseas contractors maintaining working fleets of classic Hitachi Dash-2 machinery. |
H06C-T 4251850 Engine Assembly OEM Diagnostic Guide
Use this technical diagnostic guide to identify engine failures on your Hitachi EX220-2 excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting & dense white unburned fuel smoke | Mechanical in-line injection pump delivery timing retarded or cylinder compression falling below 2.8 MPa due to 108 mm piston ring and liner wear. | Adjust injection timing or replace with a complete H06C-T 4251850 Engine Assembly. |
| 2. Severe RPM drop & heavy black smoke under digging load | Turbocharger wastegate failure leading to low manifold boost pressure (<1.1 bar) or injection pump mechanical governor spring 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 6.5L 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 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 H06C-T engine assembly is preserved with anti-corrosion fluid, sealed in heavy poly film, and strapped inside an export-grade 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 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.

H06C-T 4251850 Engine FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.










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