Belt-driven Water Pump Assembly with Mechanical Seal for Isuzu NPR59 4BC2 Engine - OEM Standard Direct Replacement
Function: Engine water pump circulates coolant through the engine block, cylinder head, and radiator to maintain optimal operating temperature. Prevents overheating and ensures efficient performance for Isuzu 4BC2 diesel engines.
The Water Pump Assembly (OEM Numbers: 8-97021171-1 / 8970211711) is a premium-quality, direct replacement cooling system component designed for Isuzu NPR59 medium-duty trucks equipped with the 4BC2 diesel engine.
| Part Number: | 8-97021171-1, 8970211711 | Product Name: | Water Pump Assembly / Engine Water Pump |
| Car Model: | ISUZU NPR59 | Engine Model: | ISUZU 4BC2 (Diesel) |
| 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 |
| Warranty: | 6 Months | Price & Stock: | Please Contact Us To Get More Information |
| Material: | High-strength aluminum alloy & precision bearings | Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement | Quality Standard: | OEM equivalent / ISO quality control |
- OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect fit and reliable cooling
- Precision Impeller: Cast or stamped impeller designed for maximum coolant flow
- Heavy-Duty Bearing: Sealed ball bearing with high-temperature grease for long life
- Mechanical Seal: Ceramic or carbon face seal prevents coolant leakage
- Corrosion-Resistant Housing: Cast iron or aluminum housing treated to resist rust
- Includes Gasket: Factory-matched gasket for leak-free installation
- Dynamically Balanced: Smooth, quiet operation without vibration
- Restores Cooling Performance: Eliminates overheating, coolant loss, and bearing noise
- Direct Replacement: Matches OE mounting holes, inlet/outlet positions, and pulley fitment
- Cost-Effective: Affordable alternative to genuine OEM pumps
This water pump is specifically designed for Isuzu NPR59 trucks with 4BC2 engine.
- ISUZU NPR59 (medium-duty truck, 4BC2 engine)
- May also fit other Isuzu trucks with 4BC1/4BC2 engine family - verify compatibility
- 4-Cylinder, Inline Diesel
- Displacement: approx. 3.3L (4BC1/4BC2 family)
Installation steps (overview):
- Drain coolant - from radiator and engine block
- Remove drive belt - loosen tensioner or idler pulley
- Remove fan and fan clutch (if applicable)
- Disconnect hoses - note positions (inlet, outlet, bypass)
- Unbolt old water pump - remove mounting bolts. Note bolt lengths and positions
- Clean mating surface - on engine block. Remove old gasket material. Do not scratch surface
- Compare new pump with old - check mounting, port locations, and pulley fit
- Install new gasket - position on block (some gaskets have adhesive backing)
- Install new water pump - place onto studs/bolts. Tighten bolts in sequence to specification (typically 20-30 Nm). Do not overtighten
- Reconnect hoses - use new hose clamps if needed
- Reinstall fan and fan clutch - torque bolts to specification
- Reinstall drive belt - ensure correct routing and tension
- Refill coolant - use recommended type (e.g., long-life or heavy-duty diesel coolant). Fill slowly to avoid air pockets
- Bleed the cooling system - run engine with heater on high, add coolant as needed. Use bleed valve if equipped
- Check for leaks - inspect pump gasket and hose connections
- Test drive - monitor engine temperature gauge
- Material Verification: Housing material and seal composition tested
- Dimensional Inspection: Mounting flange, shaft diameter, inlet/outlet sizes verified against OE blueprints
- Leak Test (Pressure/Vacuum): Each pump tested for seal integrity
- Bearing Noise Test: Rotated to check for smooth, quiet operation
- Impeller Balance: Dynamic balance checked to minimize vibration
- Visual Inspection: 100% checked for casting defects, cracks, or damage
- Packaged Safely: Pump sealed in plastic bag, boxed with foam protection. Gasket included in separate compartment
- Neutral export packing or customized packaging available
- Carton or wooden case for safe transportation
- Fast delivery for stock items
- Shipping by Express Air or Sea
For pricing, availability, or bulk purchase of the Water Pump Assembly 8-97021171-1 For Isuzu NPR59 4BC2 Engine 8970211711 Engine Cooling Pump, please contact our sales team for a competitive quote and expert technical support.
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