Yimi (Guangzhou) Automotive Parts Co, Ltd
| Payment Terms | T/T |
| Includes | Mounting Gasket |
| Supply Ability | 10000 pcs/month |
| HS Code | 841330000 |
| Net Weight | 1.55 kg |
| Packaging Details | Neutral Package or as customers’ request |
| Compatible Models | ISUZU NHR, NKR, NPR |
| Compatible Engine | ISUZU 4JG1 |
| Certifiion | ISO/TS16949 |
| Extended Engine Compatibility | ISUZU 4JA1, 4JB1, 4JG2 |
| Delivery Time | 5-8 Work Days |
| Compatible Equipment | Hitachi ZX70, ZX80 Excavators |
| Installation Position | Engine front / Belt-driven via pulley |
| Brand Name | YIMI |
| Place of Origin | CHINA |
| Model Number | ZX70 ZX80 4JG1 |
View Detail Information
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Product Specification
| Payment Terms | T/T | Includes | Mounting Gasket |
| Supply Ability | 10000 pcs/month | HS Code | 841330000 |
| Net Weight | 1.55 kg | Packaging Details | Neutral Package or as customers’ request |
| Compatible Models | ISUZU NHR, NKR, NPR | Compatible Engine | ISUZU 4JG1 |
| Certifiion | ISO/TS16949 | Extended Engine Compatibility | ISUZU 4JA1, 4JB1, 4JG2 |
| Delivery Time | 5-8 Work Days | Compatible Equipment | Hitachi ZX70, ZX80 Excavators |
| Installation Position | Engine front / Belt-driven via pulley | Brand Name | YIMI |
| Place of Origin | CHINA | Model Number | ZX70 ZX80 4JG1 |
| High Light | With Gasket Water Pump ，OEM Standard Water Pump Assembly ，Compatible with 4JG1 Engine Water Pump | ||
ISUZU Water Pump Assembly 8-97123330-2 8971233302 Compatible with 4JG1 Engine ZX70 ZX80 Excavator — With Gasket OEM Replacement
The ISUZU Water Pump Assembly with OEM numbers 8-97123330-2 / 8971233302 is a precision-engineered replacement designed for ISUZU 4JG1 series diesel engines, widely used in Hitachi ZX70, ZX80 excavators and NHR, NKR, NPR series trucks. This component is a core part of the engine cooling system, responsible for circulating coolant between the engine water jacket and radiator to maintain optimal operating temperature.
The water pump is the "heart" of the engine's forced circulation cooling system, typically driven by the crankshaft via a belt and pulley. Its working principle includes:
⚠️ Inspect immediately if any of these occur:
| Symptom | Probable Cause |
|---|---|
| Coolant leak or sweet smell near the water pump area | Worn water pump seal; coolant leaking from pump housing |
| Grinding or whining noise increasing with engine speed | Worn water pump bearing; increased rotational resistance |
| Temperature gauge spikes or overheating warning light | Corroded or damaged impeller; insufficient coolant flow |
| Heater blows cold at idle then warm at higher RPM | Insufficient pump flow at idle; slow coolant circulation |
| Cooling system pressure abnormal or frequent boiling over | Excessive impeller-to-housing clearance; reduced pumping efficiency |
| Part Number: | 8-97123330-2 8971233302 | Product Name: | Water Pump Assembly |
|---|---|---|---|
| Car Model: | ZX70 ZX80 | Engine Model: | 4JG1 |
| Condition: | 100% Brand New | Size: | Standard |
| Weight: | Standard | Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe | ||
| Package: | Neutral Packing Or Make It As Requested | ||
| Material: | High-strength aluminum alloy & precision bearings | ||
| Cooling Type: | Engine coolant circulation | ||
| Installation: | Direct OEM replacement | ||
| Quality Standard: | OEM equivalent / ISO quality control | ||
Primary Equipment Appliions:
| Brand | Equipment Model | Compatible Engine | Notes |
|---|---|---|---|
| Hitachi | ZX70 | 4JG1 | Excavator |
| Hitachi | ZX80 | 4JG1 | Excavator |
| Hitachi | ZX75UR, ZX75URT, ZX75US | 4JG1 | Excavator |
| Hitachi | EX | 4JG1 | Excavator |
Primary Vehicle Appliions:
| Brand | Model Series | Compatible Engine | Notes |
|---|---|---|---|
| ISUZU | NHR | 4JG1 | Light-duty truck |
| ISUZU | NKR | 4JG1 | Light-duty truck |
| ISUZU | NPR | 4JG1 | Light/medium-duty truck |
Primary Engine Appliions:
| Engine Model | Primary Appliion |
|---|---|
| ISUZU 4JG1 | ZX70/ZX80 excavators, NHR/NKR/NPR trucks |
| ISUZU 4JA1 / 4JB1 / 4JG2 | Extended compatibility |
| QC Item | Inspection Method | Acceptance Criterion | Frequency |
|---|---|---|---|
| Pump housing dimensional accuracy | CMM | OEM standard size ± tolerance | Batch sampling |
| Impeller dynamic balance | Dynamic balancing machine | ISO 1940 G6.3 grade | Batch sampling |
| Mechanical seal integrity | Air/Water pressure test bench | No leakage; stable pressure retention | 100% |
| Bearing rotation smoothness | Rotation test bench | Smooth rotation; no binding; no noise | 100% |
| Material composition | Spectrometer | Per metal standard | Batch sampling |
| Visual inspection | Visual | No casting defects, burrs, or rust | 100% |
Installation Guidelines (Reference Workshop Manual):
Preparation:
Removing Old Water Pump (Reference Steps):
Installing New Water Pump (Installation Sequence):
Post-Installation Checks (Mandatory):
| Item | Interval | Notes |
|---|---|---|
| Coolant inspection | Every 10,000 km / each service | Check level and color; coolant should be clear and free of contaminants |
| Water pump & hose leak check | Every 20,000 km | Check pump and hose connections for coolant seepage |
| Drive belt inspection | Every 20,000 km | Check for cracks, wear, or insufficient tension |
| Coolant replacement | Every 2 years / 40,000 km | Coolant degrades over time; affects cooling performance |
| Water pump replacement | Upon symptom occurrence | — |
| Item | Detail |
|---|---|
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Product Net Weight | 1.55 kg |
| Brand | IZUMI |
| Place of Origin | China |
| Customization Options | OEM custom packaging / neutral packaging / private labeling |
| Minimum Order Quantity | 1 piece |
| Delivery Time | 3–7 working days |
| Warranty | 12 months |
| HS Code | 841330000 |
| Target Customers | Construction equipment parts suppliers, truck parts wholesalers, engine repair shops, fleet purchasers, export traders |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
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