Belt-Driven Vane-Type Power Steering Oil Pump Assembly with Integrated Pressure Relief Valve for ISUZU NPR 4HG1
| Drive Type: | Belt-Driven (Pulley Mount) | Engine Applications: | SUZU 4HG1 |
| Pump Type: | Vane-Type Or Rotor-Type Power Steering Pump | Pressure Relief: | Integrated Pressure Relief Valve |
| Flow Control: | Integrated Flow Control Valve | Material: | High-strength Aluminum Alloy & Precision Bearings |
| Cooling Type: | Engine Coolant Circulation | Displacement: | 4.6L (4570cc) |
| High Light: | Belt-driven power steering pump,ISUZU NPR 4HG1 steering pump,Power steering pump with relief valve |
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Precision-engineered power steering oil pump delivers consistent hydraulic pressure for smooth, responsive steering operation in ISUZU NPR trucks with 4HG1 diesel engines.
The Power Steering Oil Pump Assembly (OEM Numbers: 8-98006793-4 / 8980067934) is a premium-quality, direct replacement hydraulic component designed specifically for ISUZU NPR series medium-duty trucks equipped with the 4HG1 diesel engine.
| Part Number: | 8-98006793-4, 8980067934 |
| Product Name: | Power Steering Oil Pump Assembly / P/S Pump |
| Car Model: | ISUZU NPR Series |
| Engine Model: | ISUZU 4HG1 Diesel Engine (4.6L) |
| Condition: | 100% Brand New |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
| Warranty: | 6 Months |
| Material: | High-strength aluminum alloy & precision bearings |
| Cooling Type: | Engine coolant circulation |
- OE Quality: Manufactured to strict ISUZU dimensional and performance specifications for perfect fit and function
- Precision Hydraulic Performance: Provides consistent flow and pressure for responsive steering
- Durable Construction: High-grade aluminum housing and precision bearings for long service life
- Integrated Flow Control: Maintains optimal fluid delivery across the engine speed range
- Integrated Pressure Relief: Prevents system over-pressurization and protects steering components
- Leak-Resistant Seals: High-quality seals prevent fluid leakage and system contamination
- Restores Steering Response: Eliminates heavy steering and erratic assist
- Smooth Operation: Reduces steering noise and vibration
- Direct Replacement: Simple installation during power steering system service
- Protects System Components: Proper pump function prevents contamination and damage to the steering rack/gearbox
This power steering pump is specifically designed for ISUZU medium-duty trucks. Common applications include:
- ISUZU NPR – Medium-Duty Trucks (various models)
- ISUZU NPR HD – Heavy-Duty Variants
- ISUZU NQR (select models with 4HG1 engine)
- 4-Cylinder, Inline Diesel
- Displacement: 4.6L (4570cc)
- Valvetrain: OHV
- Widely used in NPR series trucks
Professional installation recommended. Proper steering system preparation is essential:
- Relieve system pressure – Cycle the steering wheel several times with the engine off to relieve pressure
- Drain power steering fluid – Drain the fluid from the power steering reservoir
- Remove the drive belt – Loosen and remove the drive belt from the pump pulley
- Disconnect hoses – Carefully disconnect the pressure and return hoses from the pump
- Remove the old pump – Unbolt and remove the power steering pump from the engine bracket
- Remove the pulley – If required, remove the pulley from the old pump (if not transferring to the new pump)
- Clean the mounting area – Clean the engine mounting bracket and surrounding areas
- Prepare the new pump – Install the pulley onto the new pump if not pre-installed
- Transfer fittings – Transfer any necessary fittings from the old pump to the new pump
- Prime the new pump – Fill the new pump with clean power steering fluid before installation
- Install the new pump – Position the new pump and install mounting bolts
- Torque to specification – Tighten bolts to manufacturer specification
- Reconnect hoses – Reconnect the pressure and return hoses with new O-rings/seals
- Reinstall the drive belt – Install the drive belt and adjust tension to manufacturer specification
- Refill with fluid – Fill the reservoir with the correct type of power steering fluid
- Bleed the system – Start the engine and turn the steering wheel lock-to-lock several times to bleed air
- Check fluid level – Recheck and top up the fluid level as needed
- Check for leaks – Inspect all connections for fluid leakage
- Test drive – Road-test the vehicle to verify smooth, responsive steering operation
- Material Verification: Confirms housing and internal component materials meet OE specifications
- Dimensional Inspection: Mounting points, shaft dimensions, and port positions verified against OEM tolerances
- Flow and Pressure Testing: Pump output verified at various operating speeds
- Pressure Relief Valve Calibration: Valve opening pressure verified to OE specification
- Leak Testing: 100% tested for internal and external leaks
- Noise and Vibration Testing: Pump operation verified for smooth, quiet performance
- Bearing Durability Testing: Shaft and bearing integrity confirmed
- Visual Inspection: 100% checked for casting defects, machining flaws, or damage
- Packaged Safely: Protected and securely boxed to prevent damage during transit
- 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 Power Steering Oil Pump Assembly 8-98006793-4 For ISUZU NPR 4HG1 8980067934, please contact our sales team for a competitive quote and expert technical support.
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