ISUZU Cooling Fan Clutch 8-97367382-0 8973673820 for NPR NPR-HD NQR NRR 4HK1 5.2L — OEM Standard Aluminum Thermal Fan Clutch Verified Fit
Key Attributes
Product Summary
OEM-standard ISUZU 8-97367382-0 thermal viscous fan clutch for NPR/NQR/NRR 4HK1 5.2L (2005–2007). High-strength aluminum housing with precision bearings ensures durability and efficient temperature-controlled cooling. ISO/TS16949 supplier, 2-year warranty, 90-day returns, 1-day US shipping. Direct-fit, 100% tested, custom packing available.
Product Details
ISUZU Cooling Fan Clutch 4HK1
,OEM Aluminum Thermal Fan Clutch
,NPR NPR-HD NQR NRR Fan Clutch
The Cooling Fan Clutch with OEM numbers 8-97367382-0 / 8973673820 is a verified direct-fit replacement for ISUZU NPR, NPR-HD, NQR and NRR trucks, as well as platform-sharing Chevrolet W3500/W4500/W5500 Tiltmaster and GMC W3500/W4500/W5500 Forward models equipped with the 4HK1-TC 5.2L diesel engine (2005–2007 model years).
This assembly (CLUTCH; COOLING) is the core temperature-controlled component of the engine cooling system. It uses a thermal viscous silicone fluid mechanism to automatically engage or disengage the cooling fan based on engine temperature — delivering maximum airflow when cooling is needed while reducing fan power draw, fuel consumption and noise during low-temperature or highway operation.
The cooling fan clutch is continuously subjected to high temperatures, high rotational speeds and alternating loads. When internal silicone fluid leaks, the thermal spring fatigues, or the bearings wear, the result is elevated engine coolant temperature, a fan that runs constantly (increased fuel consumption and noise), or a fan that fails to engage at all (overheating risk). Timely replacement restores proper thermal regulation of the cooling system.
- Material: High-strength aluminum alloy housing with precision bearing assembly, thermal spring mechanism and X-shaped mounting fan bracket.
- Net weight: 2.24 kg (approx. 5.31 lb).
- Package dimensions: 9 × 9 × 5 inches.
- HS Code: 841490900. Fig.No.-Key No: 033-008.
- Durability & service: 2-year warranty (A-Premium brand standard), 90-day free return, ships from US warehouse within 1 business day.
- Fitment confirmed: Standard mounting dimensions and direct replacement design covering ISUZU NPR / NPR-HD / NQR / NRR (2005–2007, 4HK1-TC 5.2L) and Chevrolet / GMC W3500 / W4500 / W5500 / W5500HD (2005–2007) platform models.
- OEM cross-reference verified: Replaces ISUZU OEM numbers 8-97367-382-0 / 97367382 / 8973673820 / 8971487911. Some suppliers list 8980197430 as a series alternative. Brand cross-references include Tomitomo TI39F, D-127322 and I-71F.
When the cooling fan clutch exhibits any of the following conditions, timely inspection and replacement are required:
- Sustained high engine coolant temperature or overheating warning: Internal silicone fluid leakage or thermal valve failure prevents fan engagement at high temperatures, causing insufficient heat dissipation.
- Fan runs constantly (full speed even when cold or at highway speed): Thermal spring sticking or excessive silicone viscosity prevents clutch disengagement, causing increased fuel consumption and unnecessary fan noise.
- Fan bearing noise or wobble: Bearing wear or lubrication failure produces humming, grinding or metal friction noise during operation, with increased axial/radial fan play.
- Visible silicone fluid leakage on the fan clutch exterior: Seal failure allows silicone fluid to seep from the housing, reducing clutch engagement capability.
- Erratic coolant temperature (fluctuating high and low): Non-linear clutch engagement/disengagement causes frequent fan speed jumps and unstable engine temperature.
| Part Number | 8-97367382-0 / 8973673820 |
| Product Name | Cooling Fan Clutch |
| Car Model | NPR, NPR-HD, NQR, NRR |
| Engine Model | 4HK1 |
| 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 made 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 |
| Brand | Model | Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | N-Series | 4HK1-TC (5.2L Diesel) | 2005–2006 |
| ISUZU | NPR-HD | N-Series | 4HK1-TC (5.2L Diesel) | 2005–2007 |
| ISUZU | NQR | N-Series | 4HK1-TC (5.2L Diesel) | 2005–2007 |
| ISUZU | NRR | N-Series | 4HK1-TC (5.2L Diesel) | 2005–2007 |
| CHEVROLET | W3500 / W4500 / W5500 / W5500HD Tiltmaster | W-Series | 4HK1-TC (5.2L Diesel) | 2005–2007 |
| GMC | W3500 / W4500 / W5500 / W5500HD Forward | W-Series | 4HK1-TC (5.2L Diesel) | 2005–2007 |
- Model confirmation: This fan clutch primarily fits 4HK1-TC 5.2L diesel-powered 2005–2007 NPR/NPR-HD/NQR/NRR and platform-sharing Chevrolet/GMC W-Series models. Some listings also indicate fitment for 700P 4HK1, NPR75, NQR90 and FSR90/FSR34, but model years and configurations may vary. Verify the original fan clutch number and engine model before ordering.
- Brand/supplier variation: Different suppliers may offer variations in material (e.g. "high-strength aluminum alloy" vs "metal"), warranty terms and packaging. Confirm specific specifications and warranty terms before bulk procurement.
- Pre-installation verification: Please provide the VIN or original fan clutch number for precise fitment confirmation.
| Feature | Benefit & Verification Signal |
|---|---|
| Thermal Viscous Silicone Fluid Mechanism | Automatically adjusts fan speed based on engine temperature — reduces fan power draw, fuel consumption and noise at low temperature or highway speed, and delivers full airflow when cooling is needed (per product type description and industry-standard viscous fan clutch principle). |
| High-Strength Aluminum Alloy Housing | Aluminum offers excellent heat dissipation and corrosion resistance, maintaining structural stability in high-temperature engine bay environments (per gotrucky.com product description — robust aluminum construction). |
| Precision Bearing Assembly | High-quality bearings ensure smooth, low-noise fan operation at high rotational speeds and extend service life (per gotrucky.com product description — high-quality bearing assembly). |
| X-Shaped Mounting Bracket | Cross-shaped fan mounting bracket provides secure installation and balanced operation during high-speed rotation (per gotrucky.com product description — X-shaped mounting fan bracket). |
| Direct Fit Replacement Design | Mounting dimensions precisely match the original — no modification to water pump, fan or belt routing required (per product fitment statement — direct fit replacement). |
| 2-Year Warranty + 90-Day Return | Provides reliable after-sales protection and a low-risk procurement experience (per a-premium.com warranty policy). |
| QC Item | Verification Method |
|---|---|
| Housing Air Tightness Test | Air/oil tightness test — verifies no silicone fluid leakage and intact seals. |
| Thermal Valve Opening/Closing Temperature Test | Bench temperature-controlled test — verifies the thermal spring accurately triggers engagement/disengagement at set temperatures. |
| Bearing Rotation Resistance & Noise Test | Running test — verifies smooth bearing rotation without binding or abnormal noise. |
| Mounting Dimension Accuracy Inspection | CMM/gauge measurement — ensures mounting hole spacing and shaft bore fit meet OEM standards. |
| Aluminum Alloy Composition Test | Spectrometer analysis — verifies housing material meets standards. |
| Appearance & Packaging Inspection | 100% visual inspection — no blowholes, cracks or deformation; packaging meets transport requirements. |
- 1Disconnect power: Disconnect the negative battery terminal to prevent electrical short circuits.
- 2Release belt tension: Loosen the tensioner and remove the fan/alternator drive belt.
- 3Remove old clutch: Use a dedicated tool to hold the fan clutch or water pump pulley, remove the fixing nut (typically left-hand thread — verify direction), and extract the old clutch together with the fan.
- 4Inspect related components: Check the water pump bearing, fan blades for cracks and belt wear; replace if necessary.
- 5Install new clutch: Install the new fan clutch onto the water pump/fan bracket and tighten the fixing nut to the specified torque (note thread direction).
- 6Install belt: Reinstall the drive belt and adjust tension to specification.
- 7Check clearance: Manually rotate the fan and confirm even clearance between the fan blades and radiator/shroud without interference.
- 8Function test: Start the engine. Observe that the fan operates at low speed or idles when cold, and noticeably accelerates after coolant temperature rises; check for abnormal noise or silicone fluid leakage.
- Every 20,000 km or 6 months: Check the fan clutch housing for silicone fluid seepage and confirm smooth fan rotation.
- Every 50,000 km: Check thermal engagement function (cold vs. hot fan speed difference) and bearing play.
- When abnormal coolant temperature, constant fan operation or fan non-engagement is detected: Inspect fan clutch condition promptly to prevent engine overheating damage.
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