Description
C6.4 326-4700 Engine Assembly Overview
The C6.4 326-4700 Engine Assembly manufactured by Tatan is an electronic common rail 6.37L 6-cylinder turbocharged water-cooled diesel engine belonging to our Diesel Engine Assembly classification. Engineered specifically for Caterpillar 320D, 320D L, and 320D GC 20-ton excavators, replacing your failed or worn powerplant with a complete C6.4 326-4700 Engine Assembly unit eliminates chronic common rail pressure drops, excessive blow-by, and high-load hydraulic bogging instantly.
Built strictly according to original Caterpillar OEM specifications, this complete engine assembly comes fully equipped with a high-pressure common rail fuel pump, 6 electronic injectors, turbocharger, starter motor, and charging alternator, ensuring 100% direct bolt-on fitment with original CAT bellhousings and dual hydraulic pump drive couplings.
Key Attributes & Parameters for C6.4 326-4700 Engine Assembly
| Product Category | Diesel Engine Assembly | Warranty | 1 Year / 12 Months |
| Specific Engine Model | Caterpillar C6.4 / C6.4 ACERT Engine | Brand Name | Tatan |
| Compatible Equipment | Caterpillar 320D | 320D L Excavator | OEM Part Number | C6.4 / 326-4700 / 284-8889 |
| Engine Displacement | 6.373 Liters (6373 cc / 6.4L) | Cylinder Arrangement | 6 Cylinders Inline (I-6) 4-Stroke |
| Horsepower & RPM | 103 – 110 kW (138 – 148 HP) @ 1800-2000 RPM | Cooling System | Water-Cooled / Liquid Cooled |
| Machinery Test Report | Provided (100% Dyno Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Fuel Injection System | Electronic High-Pressure Common Rail | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Engine | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Engine Coverage
In addition to Caterpillar, 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 C6.4 326-4700 Engine Assembly, workshops and equipment owners eliminate repetitive downtime:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Caterpillar 320D Engine Replacement | Swapping to a complete C6.4 326-4700 Engine Assembly cuts machine repair downtime by up to 70% compared to field block rebuilding. |
| Excavator Overhaul Workshops | Avoids the high cost and unreliability of line-boring damaged blocks and troubleshooting complex electronic common rail sensor wiring faults. |
| Heavy Earthmoving & Mining Contractors | Restores full hydraulic breakout torque without engine bogging down under heavy 20-ton bucket loads. |
| Export Parts Stockists | Ready-to-ship replacement engine units for international contractors maintaining high-population Caterpillar 320D fleets. |
C6.4 326-4700 Engine Assembly OEM Diagnostic Guide
Use this technical diagnostic guide to identify engine failures on your Caterpillar 320D excavator:
| Engine Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Hard cold starting, rail pressure fault code, dense white smoke | Excessive internal back-leakage from worn electronic common rail injectors or common rail pressure control valve (PCV) failure. | Test injector return volume or replace with a complete Tatan C6.4 326-4700 Engine Assembly unit. |
| 2. Severe power drop & heavy black smoke under hydraulic load | Turbocharger wastegate seizure, boost pressure sensor drift, or suction control valve (SCV) sticking on the high-pressure pump. | Verify intake manifold boost pressure (>1.2 bar) or swap to a factory pre-tested complete engine. |
| 3. High engine oil consumption & heavy crankcase blow-by | Scored 6.37L cylinder liner walls, stuck oil control rings, or valve stem seal wear allowing oil ingestion into combustion chambers. | Install Tatan new complete engine; flush engine oil gallery and replace primary/secondary fuel filters. |
| 4. Overheating & coolant surge into expansion reservoir | Cylinder head gasket combustion leakage between cylinders or water pump impeller cavitation erosion under high-temperature loads. | Replace thermostat (82°C), flush radiator core, or swap to a brand-new complete engine assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan C6.4 engine assembly is preserved with anti-corrosion oil, 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 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 safety standards.
C6.4 326-4700 Engine FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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