ISUZU Fan Clutch Thermal Silicone Oil Type OEM Standard Compatible with NPR 4HF1 Diesel Engine
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
NPR 4HF1
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Part Type: | Thermal Silicone Oil Type | OEM Part Number: | 8-97088803-0 / 8970888030 |
| Compatible Model: | ISUZU NPR (1999–2019) | Compatible Engine: | ISUZU 4HF1 |
| Material: | High-strength Aluminum Alloy & Precision Bearings | Cooling Type: | Engine Coolant Circulation |
| Installation Torque: | 22–26 N·m | Replacement Cycle: | 80,000–100,000 Km |
| High Light: | Thermal Silicone Oil Type Fan Clutch,OEM Standard Fan Coupling,Compatible with ISUZU NPR 4HF1 Fan Clutch |
||
Product Description
ISUZU Fan Clutch 8-97088803-0 8970888030 for NPR 4HF1 — Silicone Oil Type OEM Standard
Product Overview
The ISUZU Fan Clutch with OEM numbers 8-97088803-0 / 8970888030 is a precision-engineered replacement designed for ISUZU NPR series trucks, compatible with 4HF1 diesel engines. This component is a core part of the engine cooling system, responsible for automatically regulating fan speed based on engine temperature.
Numbering Note: This product number is 8-97088803-0 / 8970888030. It is supplied by the IZUMI brand.
Working Principle
This is a thermal silicone oil type fan clutch (Silicone Oil Fan Coupling). Its working principle includes:
- Temperature Sensing: A bimetallic temperature-sensing spring detects the hot airflow from the radiator core.
- Automatic Regulation: When engine temperature rises, the sensing spring actuates a valve, allowing high-viscosity silicone oil into the working chamber. The oil's shear viscosity transmits torque to drive the fan at high speed for increased cooling airflow.
- Energy Saving & Noise Reduction: When temperature drops, the oil returns to the reservoir, reducing fan speed to minimize power loss and noise.
Failure Symptoms
⚠️ Inspect immediately if any of these occur:
| Symptom | Probable Cause |
|---|---|
| Persistent high engine temperature, especially under load | Silicone oil leakage or degradation; insufficient fan speed |
| Loud roaring noise at cold start that persists | Valve spool stuck in "full engagement" position |
| Rapid temperature rise at idle with A/C on | Insufficient low-speed engagement torque |
| Fan wobble or bearing noise | Worn front bearing |
| Reduced engine power or increased fuel consumption | Semi-engaged clutch causing constant fan drag |
Product Specifications
| Part Number: | 8-97088803-0 8970888030 | Product Name: | Clutch Release Bearing |
| Car Model: | NPR | Engine Model: | 4HF1 |
| 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 |
Verifiable Data
- Product Certification: Manufactured under ISO/TS16949 automotive quality management system certification.
- Brand Background: Supplied by IZUMI brand with 18 years of experience in the automotive parts industry.
- Compatible Model: ISUZU NPR (1999–2019).
- Compatible Engine: ISUZU 4HF1.
- Condition: Brand New — 100% quality inspected.
- Supply Capacity: 1000 pieces/month.
- Delivery Time: 5–8 working days.
- Warranty: Per supplier policy (typically 6–12 months).
Vehicle & Engine Compatibility
Primary Applications:
| Brand | Model | Engine | Years |
|---|---|---|---|
| ISUZU | NPR | 4HF1 | 1999–2019 |
Extended Applications:
| Brand | Model Series | Compatible Engine |
|---|---|---|
| ISUZU | CXZ, CXM | 10PE1, 10PD1, 10PC1, 6WF1 |
| ISUZU | CYZ, CYH | 6WF1, 6WA1 |
| ISUZU | EXZ | 6WG1 |
| ISUZU | FTR, FRR, FSR | 6HK1, 6HH1, 6BG1, 6HE1, 6BD1 |
| ISUZU | FVR | 6HK1, 6SD1T |
| ISUZU | NQR, NLR, NKR, NHR | 4HF1, 4HG1, 4HG1T, 4HK1, 4BD1, 4BC2, 4BE1, 4HL1, 4HE1T, 4KH1 |
| ISUZU | TFR, TFS, UBS, UCR, D-MAX | 4JB1, 4JA1, 4JJ1, 4JG2, 4JK1, 4ZA1, 4ZD1, 4ZE1 |
| HINO | 700, 500, 300 series | E13C, J08E, J05E, N04CT |
| MITSUBISHI | FUSO FIGHTER, CANTER | 6D14, 6D15, 6D16, 6D17, 6D22, 6D24, 6D40, 6M61, 6M60, 6M51, 6M70, 8M20, 8DC9, 8DC10, 4D32, 4D33, 4D34, 4D35, 4M40, 4M41, 4M42, 4M50, 4M51 |
| NISSAN UD | CW520, CW536 | RF8, RG8, RD8, RE8, FE6T, PE6, PF6 |
Important Fitment Warnings
- Number Confirmation: This product number is 8-97088803-0 / 8970888030. Verify the specific number on the original part before ordering.
- Professional Installation: The fan clutch is a critical engine cooling system component — improper installation may cause engine overheating. Professional installation is recommended.
- Associated Components: When replacing the fan clutch, it is recommended to inspect the fan blade, belt, and cooling system — replace if necessary.
Features & Benefits
ISO/TS16949 Quality Management Certified
Internationally recognized automotive industry quality standard — ensures full-process quality control.
Internationally recognized automotive industry quality standard — ensures full-process quality control.
18 Years Industry Experience (IZUMI Brand)
Mature production systems and extensive industry experience — provides reliable, high-quality automotive parts solutions.
Mature production systems and extensive industry experience — provides reliable, high-quality automotive parts solutions.
Precision Thermal Silicone Oil Control
Accurately regulates fan speed based on engine temperature for optimal cooling — effectively prevents overheating and extends engine life.
Accurately regulates fan speed based on engine temperature for optimal cooling — effectively prevents overheating and extends engine life.
Fuel-Efficient Design
Engages the fan only when necessary, reducing parasitic power loss — significantly improves fuel economy.
Engages the fan only when necessary, reducing parasitic power loss — significantly improves fuel economy.
100% Factory Quality Inspection
Every piece undergoes strict quality inspection — ensures zero-defect delivery.
Every piece undergoes strict quality inspection — ensures zero-defect delivery.
Broad OEM Cross-Compatibility
Replaces OEM numbers 8-97088803-0 / 8970888030; compatible with ADZ991804, 8-97129738-0 — simplifies sourcing for repair shops.
Replaces OEM numbers 8-97088803-0 / 8970888030; compatible with ADZ991804, 8-97129738-0 — simplifies sourcing for repair shops.
Quality Control & Verification
| QC Item | Inspection Method | Acceptance Criterion | Frequency |
|---|---|---|---|
| Sensing spring actuation temperature | Thermal response test rig | Standard temperature ± 2°C | 100% |
| Silicone oil fill volume | Precision balance weighing | Nominal value ± 2g | 100% |
| Torque transmission performance | Fan clutch dynamometer | Standard torque range | Batch sampling |
| Dynamic balance | Dynamic balancing machine | Per ISO 1940 standard | 100% |
| High-pressure seal leak test | Compressed air + underwater test | No leakage | 100% |
| Low-temperature startup | -30°C freezer soak test | Smooth rotation | Quarterly sampling |
| Visual inspection | Visual | No defects | 100% |
| ISO/TS16949 quality audit | Third-party certification body | Per ISO/TS16949 standard | Periodic audit |
Installation & Maintenance Recommendations
⚠️ IMPORTANT SAFETY NOTICE:
After engine shutdown, the cooling fan and clutch surface temperatures are extremely high. Allow the engine to cool completely (at least 30 minutes) before proceeding. Always wear protective gloves and safety glasses.
After engine shutdown, the cooling fan and clutch surface temperatures are extremely high. Allow the engine to cool completely (at least 30 minutes) before proceeding. Always wear protective gloves and safety glasses.
Installation Guidelines (Reference Workshop Manual):
Preparation:
- Confirm vehicle model and engine compatibility
- Prepare tools: Socket wrench, torque wrench, pry bar, cleaning cloth
Removing Old Fan Clutch:
- Disconnect battery negative cable.
- Remove fan shroud (if equipped).
- Hold the water pump pulley center bolt and loosen the mounting bolts to remove the old clutch.
Installing New Fan Clutch:
- Clean mounting surface: Thoroughly clean the water pump flange mounting surface — ensure no oil or dirt.
- Install new clutch: Align the new fan clutch with the locating pin and push evenly by hand fully into place.
- Torque bolts: Tighten mounting bolts in a cross-pattern to 22–26 N·m.
- Reinstall fan shroud.
Post-Installation Checks (Mandatory):
- Manual rotation check: Rotate the fan blade by hand — confirm smooth rotation, no binding.
- Cold start test: Start the engine (cold) — the fan should produce a "roar" for approximately 30–90 seconds then gradually slow down.
- Hot running test: Idle until normal operating temperature — the fan should audibly accelerate with noticeable airflow.
Maintenance Schedule:
| Item | Interval | Notes |
|---|---|---|
| Fan assembly play/noise check | Every 10,000 km / each oil service | Check bearing clearance |
| Clutch surface for oil stains | Every 20,000 km | Check seal condition |
| Belt tension check | Every 20,000 km | Deflection 10–15mm |
| Clutch replacement cycle | 80,000–100,000 km or upon symptom occurrence | Depends on operating conditions |
Packaging & Supply
| Item | Detail |
|---|---|
| Packaging | Neutral box / Color box / Custom brand packaging |
| Quantity per carton | 1 pc/carton |
| Brand | IZUMI |
| Place of Origin | China |
| Customization Options | OEM custom packaging / neutral packaging / private labeling |
| Minimum Order Quantity | 5 pieces |
| Delivery Time | 5–8 working days |
| Supply Capacity | 1000 pieces/month |
| Target Customers | Truck parts wholesalers, repair chain stores, fleet purchasers, export traders |
Related Products
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts Part Number: 5873102680 5-87310268-0 Product Name: Engine Block Car Model: ISUZU 100P Engine Model: ISUZU 4JB1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia...
Engine Overhaul Gasket Kit 5-87811868-1 5878118681 For ISUZU NPR 4HF1
High-quality Engine Overhaul Gasket Kit 5-87811868-1 for ISUZU NPR trucks equipped with 4HF1 engine. Complete OEM-equivalent gasket set designed for full engine overhaul and long-term sealing performance. Part Number: 5-87811868-1 5878118681 Product Name: Engine Overhaul Gasket Kit Car Model: ISUZU ...
Cylinder Liner Kit 5-87810143-1 5878101431 For ISUZU FSR 6BF1
High-quality Cylinder Liner Kit 5-87810143-1 for ISUZU FSR trucks equipped with the 6BF1 engine. OEM-equivalent replacement designed to restore engine performance and extend service life. Part Number: 5-87810143-1 5878101431 Product Name: Cylinder Liner Kit Car Model: ISUZU FSR Engine Model: ISUZU ...
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1 Part Number: 8970211711 8-97021171-1 Product Name: Water Pump Assembly Car Model: ISUZU NPR59 Engine Model: ISUZU 4BC2 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle ...
