The Fuel Injection Pump – 12V for Isuzu 4HK1 Engine (2004–2007) is engineered to provide precise diesel fuel delivery and maintain optimal engine performance. This OEM-quality pump maintains accurate fuel pressure and timing for efficient combustion and improved fuel economy.
Built to withstand high engine temperatures and long-term use, it ensures smooth operation in Isuzu NPR, NQR, and NRR models. The 12V electrical configuration offers stable injection control, enhancing throttle response and reducing emissions.
This pump is a direct-fit replacement for the factory-installed unit, tested for durability and consistent fuel flow under all load conditions.
Key Features:
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Designed for Isuzu 4HK1 diesel engines (2004–2007)
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12-volt configuration for stable fuel injection control
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High-pressure delivery for improved combustion
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OEM specification for perfect fit and function
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Enhances fuel efficiency and reduces emissions
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Long-lasting durability and corrosion resistance
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Ideal for Isuzu NPR, NQR, and NRR series trucks
Compatible Applications:
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Engines: Isuzu 4HK1
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Years: 2004–2007
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Models: Isuzu NPR, NQR, NRR
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Applications: Medium-duty trucks and commercial diesel vehicles
Frequently Asked Questions (FAQ)
What is the function of a fuel injection pump in the Isuzu 4HK1 engine?
The fuel injection pump delivers high-pressure diesel fuel to the injectors at the correct timing for efficient combustion and smooth engine operation.
Is this 12V injection pump compatible with my Isuzu NPR or NQR truck?
Yes, this pump is designed to fit Isuzu NPR, NQR, and NRR trucks with the 4HK1 engine from model years 2004 to 2007.
Can I use this pump as a direct replacement for the original?
Yes, this is an OEM-spec replacement pump designed for direct installation without modifications.
How do I know if my fuel injection pump needs replacement?
Common symptoms include poor acceleration, hard starting, engine knocking, or excessive smoke.
Does this pump require professional installation?
It’s highly recommended to have it installed by a qualified diesel technician to ensure correct timing and calibration.
Fuel Injection Pump – 12V | Isuzu 4HK1 Engine | 2004-07
OE Replacement: Not Available
Fits Following: Brand : Original Denso | Fits: Isuzu NPR NPR-HD NQR NRR / 4HK1 / 12V (Rjs) 5.2L
Year: 2004-2007
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