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Oil Pump Assembly 8-98017585-1 For Isuzu 4HK1 4HF1 Engine
Premium-quality direct replacement engine lubriion component designed for Isuzu 4HK1 and 4HF1 diesel engines, commonly used in Isuzu NPR, NQR, ELF, and other medium-duty trucks.
Product Specifiions
Part Number
8-98017585-1, 8980175851
Product Name
Oil Pump Assembly / Engine Oil Pump
Car Model
ISUZU (NPR, NQR, ELF, etc.)
Engine Model
ISUZU 4HK1 (5.2L), 4HF1 (3.9L) Diesel
Condition
100% Brand New
Material
High-strength aluminum alloy & precision bearings
Warranty
6 Months
Function
Engine oil pump circulates pressurized oil to bearings, pistons, camshaft, and valve train. Ensures proper lubriion, cooling, and cleaning of engine components for Isuzu 4HK1/4HF1 diesel engines.
Features & Advantages
OE Quality: Manufactured to Isuzu dimensional and material specifiions 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
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
This oil pump assembly is specifically designed for Isuzu 4HK1 and 4HF1 engines.
Isuzu Truck Models (typical):
ISUZU NPR (NPR66, NPR70, NPR71, NPR75, etc.)
ISUZU NQR (medium-duty truck)
ISUZU ELF (N-series)
Other Isuzu commercial vehicles with 4HK1/4HF1 engines
Engine Specifiions:
Engine
Displacement
Notes
4HK1
5.2L (5193cc)
Common rail diesel
4HF1
3.9L (3856cc)
Direct injection diesel
Installation Notes
Installation steps (overview):
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 specifiion (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 lubriion 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 Verifiion: Housing and gear alloy composition tested
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. Shipping by Express Air or Sea.
Inquiry
For pricing, availability, or bulk purchase of the Oil Pump Assembly 8-98017585-1 For Isuzu 4HK1 4HF1 Engine 8980175851 Auto Spare Parts, please contact our sales team for a competitive quote and expert technical support.
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
