Oil-Water Separator 8-97240126-0 8972401260 For ISUZU NKR77 4JH1 3.0L Diesel — OEM Fuel Filter Sedimenter Assembly With Priming Pump

The Fuel Sedimenter Assembly (Oil-Water Separator) with OEM numbers 8-97240126-0 and 8972401260 is a verified OEM-grade direct replacement for ISUZU NKR77 trucks equipped with the 4JH1 3.0L diesel engine. As a critical component of the fuel system, this combined fuel filter and water separator removes water particles and other contaminants from diesel fuel before it reaches the high-pressure injection pump. It features an integrated diaphragm-type priming pump at the top for convenient air bleeding procedures, ensuring reliable engine starting and optimal combustion performance in commercial transport applications.

• Real Shop Test Data: Precision-engineered filtration system delivers efficient water separation and contaminant removal — verified against ISUZU OEM specifications for 4JH1 engines.
• Proven Durability: Features an integrated priming pump, robust construction, and a net weight of 1.103 kg (approx. 2.43 lbs) — rated for 100,000+ km under normal operation based on OEM-grade manufacturing standards.
• Installation Success Rate: 99% direct bolt-on fitment — confirmed across thousands of repair orders for ISUZU NKR77 / 4JH1 vehicles.
• OEM Cross-Reference Verified: Genuine ISUZU part number — replaces 8-97240126-0, 8972401260.

If your fuel sedimenter is failing, you may experience one or more of the following symptoms:

• Hard Starting / Extended Cranking: Engine takes longer than normal to start — indicates clogged filter element or water contamination in the fuel system.
• Loss of Engine Power: Significant reduction in power and acceleration, especially under load — restricted fuel flow to the injection pump.
• Rough Idle or Engine Stalling: Engine runs unevenly or stalls intermittently due to contaminated fuel reaching the injectors.
• Water in Fuel Warning Light: Dashboard indicator illuminates — the sedimenter has reached its water holding capacity and requires draining.
• Visible Contamination: Dark, cloudy, or contaminated fuel in the sedimenter bowl — indicates the filter element is saturated and needs replacement.

Our manufacturing and inspection processes ensure every fuel sedimenter meets or exceeds ISUZU OEM standards.

Pre-Installation Checklist:

• Ensure the engine is cool before starting work.
• Depressurize the fuel system before disconnecting fuel lines.
• Clean the area around the sedimenter to prevent contamination.
• Inspect fuel lines for cracks or damage — replace if necessary.
• Note: The integrated priming pump at the top of the sedimenter is used during air bleeding procedures.

Installation Guidelines (Reference ISUZU workshop manual):

1. Disconnect the negative battery terminal.
2. Depressurize the fuel system.
3. Disconnect the fuel sedimenter connector and fuel heater connector (if equipped).
4. Remove the fuel lines from the sedimenter (note positions for reinstallation).
5. Remove the mounting bolts securing the sedimenter assembly.
6. Remove the old sedimenter.
7. Clean the mounting surface thoroughly.
8. Install the new sedimenter with new seals/gaskets.
9. Torque mounting bolts to manufacturer's specified torque settings (refer to ISUZU workshop manual).
10. Reconnect fuel lines securely.
11. CRITICAL: Prime the fuel system using the integrated priming pump until fuel flows free of air bubbles.
12. Start the engine and check for fuel leaks.
13. Check for proper fuel flow and engine operation.

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months. Check for water accumulation, fuel leaks, or contamination.
• Draining: When the red buoy starts to reach the drain level, the water separator should be drained.
• Replacement: Recommended at 100,000 km or immediately if failure symptoms appear.
• Note: A sedimenter features replaceable filters, offering cost benefits over replacing the entire cartridge.

• Packaging: Each fuel sedimenter is securely packed in protective packaging to prevent shipping damage.
• Single Package Weight: 1.103 kg.
• HS Code: 84212300.
• Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners.