The Bosch 0445110317 Common Rail Injector is a high-precision diesel fuel injector widely used in 2.5L diesel engines equipped with Bosch Common Rail (CR) systems. Known for its reliability, fuel efficiency, and stable injection performance, this injector is commonly found in light commercial vehicles and SUVs across Asian and international markets.
1. Product Overview
The 0445110317 injector is part of Bosch’s electronically controlled Common Rail injection system. It delivers ultra-fine fuel atomization at extremely high pressure, improving combustion efficiency and reducing emissions.
This injector is typically used in DK4A 2.5L diesel engines, especially in Nissan, Jinbei, and Dongfeng platforms.
2. Key Performance Features
High-Precision Fuel Injection
The injector ensures multiple injection events per combustion cycle, improving torque response and reducing noise.
High-Pressure Capability
Works under high-pressure Common Rail systems (up to 1600–1800 bar depending on system configuration), ensuring complete fuel combustion.
Improved Fuel Efficiency
Optimized spray pattern reduces fuel waste and improves mileage under mixed driving conditions.
Lower Emissions
Precise fuel control reduces soot (PM) and NOx emissions, meeting modern diesel standards.
Durable Solenoid Control Valve
Bosch electromagnetic control ensures stable long-term performance with minimal drift.
2. Product Specifications
| Item | Specification |
|---|---|
| Part Number | 0445110317 / 0 445 110 317 |
| Country of Origin | China |
| Fuel System | Common Rail Diesel Injection |
| Engine Displacement | 2.5L Diesel |
| Injector Type | Solenoid-Controlled Injector |
| Injection Pressure | Up to 1600–1800 bar (system dependent) |
| Control Method | ECU Electronic Control |
| Fuel Type | Diesel |
| Weight | Approx. 0.7 kg |
| Sealing | High-pressure sealing washer included |
| Condition Options | Original OEM / Brand New Aftermarket / Remanufactured |
4. Compatible Engine Models
Based on market application data, this injector is commonly used in:
- DK4A 2.5L diesel engine platform
- Nissan 2.5D diesel engines
- Jinbei Grace 2.5D
- Dongfeng ZNA Rich 2.5D
- Xinchen 2.5L diesel engines
Engine systems typically use Bosch Common Rail high-pressure fuel supply architecture.
5. Vehicle Applications
The injector is widely found in:
- Nissan Paladin 2.5D
- Jinbei Grace 2.5D
- Dongfeng ZNA Rich 2.5
- Certain commercial light trucks and vans (Asian market)
These vehicles usually operate in utility, logistics, and light off-road environments, requiring strong low-end torque and fuel efficiency.
6. Function in Diesel Engine System
The injector plays a critical role in:
- Fuel atomization inside the combustion chamber
- Precise fuel quantity control via ECU signals
- Optimizing combustion timing
- Reducing fuel consumption and engine noise
It is part of a closed-loop system involving:
- High-pressure pump
- Common rail pipe
- ECU (Engine Control Unit)
- Sensors (crankshaft, pressure, temperature)
7. Replacement Timing (When to Replace)
You should consider replacing injector 0445110317 when you notice:
- Hard engine starting
- Excessive black smoke
- Fuel consumption increase
- Engine vibration or knocking
- Misfire under load
- Injector leakage or return flow imbalance
Typical lifespan: 120,000 – 200,000 km, depending on fuel quality and maintenance.
8. Maintenance & Repair Tips
To extend injector life:
- Use clean diesel fuel (low sulfur preferred)
- Replace fuel filters regularly (every 10,000–20,000 km)
- Avoid water contamination in fuel system
- Perform injector cleaning if performance drops
- Ensure ECU coding after replacement
Professional ultrasonic cleaning and bench testing are recommended for diagnosis.
9. Replacement Advantages
Upgrading or replacing with a high-quality 0445110317 injector provides:
- Restored engine power and throttle response
- Improved fuel economy
- Lower emissions output
- Reduced engine noise and vibration
- Better cold-start performance
- Stable long-term engine reliability
10. FAQ – Common Questions
Q1: Is Bosch 0445110317 available in original and aftermarket versions?
Yes. On the market, this injector is available in:
Original Bosch OEM
Brand new aftermarket (China-made compatible units)
Remanufactured/refurbished units
Q2: Can I install it without coding?
No. ECU coding or calibration is usually required after replacement for correct fuel timing.
Q3: What causes injector failure?
Common causes include poor fuel quality, clogged filters, water contamination, and high-pressure wear.
Q4: Can it be repaired instead of replaced?
Yes. Many cases allow ultrasonic cleaning, nozzle replacement, or full remanufacturing.
Q5: What happens if a faulty injector is not replaced?
It may cause engine misfire, fuel waste, piston damage, or even catalytic converter failure.
11. Conclusion
The Bosch 0445110317 Common Rail Injector is a reliable and efficient diesel injection component designed for 2.5L diesel engines requiring stable fuel delivery and high combustion efficiency. Proper maintenance and timely replacement ensure optimal engine performance and long-term durability.
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