8-98011604-1 Common Rail Injector For Isuzu 4JJ1 Denso Fuel Injector Replacement

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Common rail injectors for Isuzu 4JJ1 engines

I. Basic Information
Compatible engine: Isuzu 4JJ1-TC/4JJ1-TCX (2.8L/3.0L in-line 4-cylinder diesel engine)
Applied vehicle models
Passenger car models: Isuzu D-MAX pickup truck, MU-X Mu-Youxia;
Commercial/Construction machinery: Isuzu NQR light truck, Hitachi ZX130 excavator, Sumitomo SH130 loader;
Core supplier: DENSO, original factory part number such as 8-98011604-1 

Ii. Structure and Technical Parameters

Iii. Functions and Advantages
Precise fuel control
Through the high-pressure injection of the common rail system, "on-demand fuel injection" is achieved, which improves the fuel economy of the 4JJ1 engine by 10% to 15%.
Emission optimization
The multi-stage injection design reduces the emissions of nitrogen oxides (NOx) and particulate matter (PM), meeting the Euro V/National VI regulations.
Power compatibility
Match the low-speed torque characteristics (peak torque 430N · m) of the 4JJ1 engine to ensure power response under high-load conditions.
Iv. Key Points for Use and Maintenance
Fuel requirements
Low-sulfur diesel that meets the National VI standards must be used to prevent impurities from clogging the fuel injectors (it is recommended to replace the fuel filter every 20,000 kilometers).
Calibration requirements
After replacement, professional diagnostic equipment (such as Isuzu IDSS) should be used for fuel injector code matching; otherwise, problems such as insufficient power and increased fuel consumption may occur.
Lifespan
Under normal working conditions, the service life is ≥ 80,000 kilometers. If idle vibration and power decline occur, the atomization effect of the fuel injector needs to be checked.
V. Core Values
As the "fuel heart" of the 4JJ1 engine, this fuel injector directly determines the engine's power, fuel consumption and emission performance, and is one of the key components to ensure the reliability of the entire machine.

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