Gear-type or Rotor-type Oil Pump Assembly with Cast Iron / Aluminum Housing for Direct OEM Replacement in Isuzu NPR66 4HF1 Engine
Price:
Negotiable
MOQ:
10 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
Oil Pump Assembly 8-97147338-0 For Isuzu NPR66 4HF1 Engine
Premium-quality direct replacement engine lubrication component designed for Isuzu NPR66 medium-duty trucks equipped with the 4HF1 diesel engine.
| Part Number | 8-97147338-0, 8971473380, 8-98017585-0, 8980175850 |
| Product Name | Oil Pump Assembly / Engine Oil Pump |
| Car Model | ISUZU NPR66 |
| Engine Model | ISUZU 4HF1 (3.9L Diesel) |
| Condition | 100% Brand New |
| Origin | China Mainland |
| Warranty | 6 Months |
| Material | High-strength aluminum alloy & precision bearings |
Function
Engine oil pump circulates pressurized oil to bearings, pistons, camshaft, and valve train. Ensures proper lubrication, cooling, and cleaning of engine components for Isuzu 4HF1 diesel engines.
Features & Advantages
- OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect fit and reliable oil pressure
- Precision Gears/Rotors: Hardened and ground to tight tolerances for consistent flow and minimal noise
- Integrated Pressure Relief Valve: Prevents over-pressurization at high RPM, protecting oil filter and seals
- Durable Housing: Corrosion-resistant cast iron or aluminum construction withstands engine heat and vibration
- High Flow Capacity: Delivers adequate oil volume for turbocharger cooling and piston jets under high load
- Restores Engine Protection: Eliminates low oil pressure, knocking, and bearing wear
- Direct Replacement: Matches OE mounting holes, drive gear interface, and oil passages
- Cost-Effective: Affordable alternative to genuine OEM without compromising reliability
Vehicle & Engine Compatibility
Primary Application: ISUZU NPR66 medium-duty truck with 4HF1 engine
May also fit: Other Isuzu trucks using the 4HF1 engine (e.g., NKR, NPR59, NPR70) - verification recommended
Engine Specification - ISUZU 4HF1
- 4-Cylinder, Inline Diesel, Direct Injection
- Displacement: 3.9L (3856cc)
- Application: NPR66, NKR, and industrial equipment
Installation Notes
- Drain engine oil - remove oil pan and clean sealing surfaces
- Remove old oil pump - unbolt from engine block. Note gasket or seal orientation
- Clean mounting surface - remove old gasket material. Ensure no debris falls into the engine
- Prime the new oil pump - fill with clean engine oil or pack with assembly lube to ensure immediate suction on startup
- Install new pump - use new gasket or O-ring. Torque mounting bolts to specification (typically 20-30 Nm)
- Reinstall oil pan - with new gasket or sealant. Torque pan bolts
- Install new oil filter - pre-fill if possible
- Refill with new engine oil - correct grade and quantity
- Prime the lubrication system - disable fuel system and crank engine for 10-15 seconds until oil pressure light goes out
- Start engine - check oil pressure light goes off immediately. Inspect for leaks
- Test drive - verify normal oil pressure and no unusual noise
Quality Control
- Material Verification: Housing and gear alloy composition tested
- Dimensional Inspection: Gear clearances, housing bore diameters, and mounting flange verified
- Flow/Pressure Test: Pump tested on a test bench for flow rate and pressure at specified RPM
- Relief Valve Test: Valve opening pressure verified
- Wear Test: Sample pumps run for durability cycles
- Visual Inspection: 100% checked for casting defects, burrs, or contamination
- Packaged Safely: Pump sealed in plastic bag, boxed with foam to protect ports and drive gear
Packaging and Delivery
Neutral export packing or customized packaging available. Carton or wooden case for safe transportation. Fast delivery for stock items via Express Air or Sea.
Inquiry
For pricing, availability, or bulk purchase, please contact our sales team for a competitive quote and expert technical support.
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Get in Touch
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Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
4F, 7th, No. 2, South Jinguu Road, Huadong Town, Huadu District, Guangzhou City
Contact Person
James