The Isuzu 4JH1 is a 4-cylinder diesel engine widely used in Isuzu light trucks, vans, and marine applications worldwide. The fuel injection pump is the heart of the diesel fuel system — responsible for pressurizing and precisely metering fuel delivery to each injector. When it fails, you'll experience hard starts, severe power loss, excessive black smoke, fuel starvation under load, and in severe cases complete engine shutdown. This is a brand-new genuine Isuzu fuel injection pump, covering five OEM part numbers in the 8973267390–8973267393 series, built to the same specifications as the original factory-fitted unit.

✅ Direct-Fit Compatibility

• Isuzu Engine: 4JH1
• Suitable for Isuzu light trucks, vans, and marine applications fitted with the 4JH1 engine
• Direct replacement — no modifications required

🔧 Product Highlights

• 100% New Genuine OEM: Factory-new Isuzu injection pump — not aftermarket, not remanufactured
• OEM-Spec Fuel Delivery: Correct injection pressure, timing, and metering for full power restoration and clean combustion
• 5 OEM Part Numbers: Covers the full 8973267390–8973267393 series including hyphenated format (8-97326739-3) for confirmed fitment
• Fast Worldwide Shipping: In-stock and ready to ship globally
• Resolves Complete Pump Failures: The definitive fix when the injection pump is confirmed as the root cause of hard starts, power loss, or no-start conditions

📦 What's Included

• 1 × New Genuine Fuel Injection Pump (8973267393)

🔑 Key Specs

• Part Numbers: 8973267393, 8-97326739-3, 8973267392, 8973267391, 8973267390
• Condition: New Genuine OEM
• Fitment: Isuzu 4JH1 engine (light trucks, vans, marine)

Please note: No warranty is offered for this part. Please verify your engine serial number and existing part number before ordering. Contact us for fitment confirmation if needed.