Fuel Feed Pump with Integrated Hand Primer for Isuzu NPR 4HF1 - Direct OEM Replacement & Durable Cast Aluminum/Iron Body

The Fuel Feed Pump (OEM Numbers: 8-97377345-1 / 8973773451) is a premium-quality, direct replacement fuel system component designed for Isuzu NPR medium-duty trucks equipped with the 4HF1 diesel engine. This mechanical pump draws fuel from the tank and delivers it at low pressure to the injection pump, featuring a built-in priming pump for manual air bleeding after filter changes.

• OE Quality: Manufactured to Isuzu dimensional and performance specifications for perfect fit and reliable fuel delivery
• Integrated Hand Primer: Allows easy manual bleeding of air after filter changes - no special tools required
• Durable Construction: Cast housing resists corrosion and vibration
• Non-Return Valve: Prevents fuel drain-back, ensuring quick starting
• Restores Fuel System Performance: Eliminates hard starting, stalling, and power loss
• Direct Replacement: Simple bolt-on installation - matches OE mounting and connections
• Cost-Effective: Affordable alternative to genuine OEM pumps

This fuel feed pump is specifically designed for Isuzu NPR trucks with 4HF1 engine.

• ISUZU NPR (NPR59, NPR66, NPR70, NPR71, NPR75, etc. with 4HF1)
• May also fit other Isuzu models using the 4HF1 engine - verify compatibility

• 4-Cylinder, Inline Diesel, Direct Injection
• Displacement: 3.9L (3856cc)

Installation steps (overview):

1. Disconnect battery negative cable
2. Locate the fuel feed pump (usually on the engine block near the injection pump)
3. Place a drain pan under the pump
4. Disconnect fuel inlet and outlet lines (label positions)
5. Remove the mounting bolts
6. Remove the old pump and gasket
7. Clean the mounting surface
8. Install a new gasket and the new pump. Hand-tighten bolts
9. Torque mounting bolts to specification (typically 20-30 Nm)
10. Reconnect fuel lines (IN from tank, OUT to filter/injection pump)
11. Reconnect battery
12. Prime the system by repeatedly pressing the hand primer until fuel flows with no air bubbles and resistance builds
13. Start engine and check for leaks

• Material Verification: Housing alloy and rubber primer compound tested
• Leak Test: Pump pressurized to ensure no fuel leakage
• Primer Function Test: Manual pump operation and sealing verified
• Flow Test: Fuel delivery volume and pressure checked
• Dimensional Inspection: Mounting hole pattern and port threads verified
• Visual Inspection: 100% checked for casting defects or damage
• Packaged Safely: Sealed in plastic bag, boxed with foam

• 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 Fuel Feed Pump 8-97377345-1 For Isuzu NPR 4HF1 With Priming Pump 8973773451, please contact our sales team for a competitive quote and expert technical support.