Direct Replacement Fuel Injection Pump — OEM-Spec for Isuzu NPR 4HK1 5.2L (2004–2007)

The Isuzu NPR with the 4HK1 5.2L diesel is one of the most trusted medium-duty platforms in North America — found in box truck fleets, landscaping operations, food service delivery, and municipal services. The fuel injection pump is the heart of the fuel system: it generates the high pressure that drives injection timing and fuel delivery across all cylinders. When it fails, the symptoms are hard to miss — hard starts, severe power loss, black smoke, and eventually a no-start condition. This direct-fit replacement pump (294000-0266 / 2940000266) restores factory injection pressure and timing, bringing your NPR back to reliable, full-load operation.

✅ Direct-Fit Compatibility

• Vehicle: Isuzu NPR medium-duty truck
• Engine: Isuzu 4HK1 5.2L diesel
• Years: 2004–2007
• Bolt-on replacement — no modifications required
• Suitable for fleet maintenance, engine rebuilds, and direct replacement applications

🔧 Why This Pump Delivers

• OEM-matched injection pressure — factory-spec high-pressure output for precise injection timing and complete combustion across all cylinders
• 100% new aftermarket — not rebuilt or remanufactured; starts with a full service life and no accumulated wear
• Dual OEM cross-reference — covers both 294000-0266 and 2940000266 formats for confirmed fitment confidence
• Restores full-load performance — eliminates hard starts, power loss, and black smoke caused by insufficient injection pressure
• Fleet-grade reliability — built to withstand the high-cycle demands of daily commercial truck operation
• No dealer markup — OEM-equivalent quality at a fraction of Isuzu dealer pricing

📦 What's Included

• 1 × Fuel Injection Pump (294000-0266 / 2940000266)

🔑 Key Specs

• Part Numbers: 294000-0266, 2940000266
• Condition: 100% New Aftermarket
• Product Type: Fuel Injection Pump
• Fitment: Isuzu NPR / 4HK1 5.2L diesel / 2004–2007

A $457 pump that keeps a fleet truck earning its keep. Order today — in stock and ready to ship.