The 0445120007 common rail injector is widely used in Cummins ISBe and ISDe engines, powering city buses, delivery trucks, and other medium-duty commercial vehicles. These applications face unique challenges: frequent start-stops, long idle periods, and high annual mileage.
This guide compiles verified technical specifications, compatible vehicle models, practical maintenance schedules for high-hour operation, and a real fleet case study from Southeast Asia.
All injectors we supply are 100% new aftermarket units, tested on imported common rail equipment, and backed by a 6‑month warranty.
Industry Experience
We supply diesel injection components to bus fleets and logistics companies across Asia, Africa, and the Middle East. Our focus is on durability and cost-effective maintenance for high-mileage operations.
Quick Navigation
- Product Overview
- Technical Specifications (Based on Verified Sources)
- Compatible Engines & Vehicle Fitments (Bosch & eBay data)
- Why City Buses & Delivery Trucks Wear Injectors Faster
- Maintenance Schedule for High-Hour Operation
- Real Customer Case: Southeast Asia Bus Fleet (12 Units)
- FAQ
- Related Models & Internal Links
- Summary & Our Commitment
1. Product Overview
1.1 Basic Information
| Parameter | Details |
|---|---|
| Bosch numbers | 0445120007 / 0 445 120 007 |
| Type | High‑pressure common rail solenoid injector – 100% new aftermarket part |
| Primary applications | Cummins ISBe / ISDe (4.5L, 5.9L) in city buses, medium trucks |
| Technology | CRIN2 compatible (solenoid, up to 1600 bar system pressure) |
| Nozzle holes | 6 |
1.2 Why Choose Our Aftermarket New Injector
- Price advantage – Significantly lower than OEM dealer pricing.
- New components – No reused solenoids, needles, or nozzles.
- Quality tested – Each unit tested on imported professional common rail test bench.
1.3 Our Track Record
| Metric | Performance |
|---|---|
| Annual sales volume (0445120007 compatible) | Approximately 1,000 units (part of total 1,5000+ across all models) |
| Customer satisfaction | Positive feedback from fleets and repair shops |
| Warranty | 6 months unconditional |
2. Technical Specifications
| Parameter | Specification |
|---|---|
| Injection system | Bosch CRIN / common rail |
| System pressure (max) | 1600+ bar (up to 2,000 bar on later systems) |
| Nozzle type | Multi-hole, laser drilled |
| Calibration | IMA / IQA trim code included |
| Coil resistance (20°C) | 0.2 – 0.6 Ω (industry standard) |
| Return flow @ idle | ≤ 35 ml/min (industry standard) |
| Weight | ~0.8 kg |
| Materials | High-strength metal alloy, corrosion-resistant |
Note: System pressure refers to common rail operating pressure, not injector opening pressure. The 0445120007 is a CRI 2 (solenoid) injector, part of Bosch’s second-generation common rail injector family.
3. Compatible Engines & Vehicle Fitments
Based on public listings, verified supplier data, and commercial vehicle parts listings, the part number 0445120007 is compatible with the following engines and vehicle models.
3.1 Primary Engines
| Engine Model | Displacement | Applications |
|---|---|---|
| Cummins ISBe | 4.5L, 5.9L, 6.7L | Medium-duty trucks, public transport, construction |
| Cummins ISDe | — | Trucks, buses |
| Cummins QSB | 4.5L, 5.9L | Construction equipment, agriculture, marine |
| Iveco Tector | — | Commercial vehicles |
3.2 Vehicle Fitments – From eBay & Verified Supplier Listings
Based on cross-referenced data from eBay, AutoNorma, and Chinese supplier sources, the 0445120007 fits the following vehicles:
| Category | Specific Models |
|---|---|
| DAF LF series | DAF LF 45 FA 45.220 (162kW), DAF LF 45 FA 45.150 (110kW), DAF LF 45 FA 45.170 (123kW), DAF LF 45 FA 45.180 (136kW) – confirmed via AutoNorma parts database |
| Iveco | Iveco EuroCargo (Tector engine), Iveco Daily VI, Iveco Tector trucks |
| Dongfeng | Dongfeng Kinland (ISBe engine), Dongfeng Tianjin |
| Chinese buses | Higer, King Long, Yutong (ISBe-powered) |
| Foton | Foton Aumark series |
| Ford | Ford commercial vehicles (with ISBe engine) |
3.3 OEM / Cross‑Reference Numbers
Based on eBay, AutoNorma, and verified supplier data, the 0445120007 cross‑references with the following OEM part numbers:
| Brand / System | Part Number |
|---|---|
| Iveco / DAF | 2830957 |
| Cummins | 4897271 / 4025249 |
| Bosch (alternate) | 0445120212 |
| Bascolin reference | 0986435508 |
Always confirm compatibility using your engine serial number or original injector part number – regional emission calibrations may vary.
4. Common Failure Symptoms of Injector 0445120007
The table below summarizes common symptoms reported by fleet operators and diesel repair workshops for the Bosch 0445120007 injector. Early identification can help reduce downtime, prevent secondary engine issues, and avoid unnecessary component replacement.
| Symptom | Common Possible Cause |
|---|---|
| Black smoke during acceleration | Nozzle carbon deposits, often associated with long idle periods or poor fuel quality |
| Hard starting or extended cranking (especially when hot) | Excessive return flow caused by internal valve wear |
| Loss of power under load | Poor fuel atomization, which can result from clogged or worn nozzle holes |
| Rough idle or uneven engine operation | Injector imbalance causing inconsistent fuel delivery between cylinders |
| Increased fuel consumption | Fuel delivery deviation or injector wear affecting combustion efficiency |
| Engine fault codes or injector balance warnings | ECU detecting abnormal injector correction values |
Note: If one or more of these symptoms appear, begin with a return flow test and review injector balance values using a diagnostic tool. Replacing a single injector without confirming the root cause may not fully resolve the issue, especially in high-mileage fleet applications.
5. Why City Buses & Delivery Trucks Wear Injectors Faster
These vehicles operate under conditions that accelerate injector wear:
- Frequent start-stops – Injectors cycle more often than highway trucks.
- Long idle periods – Low load, low fuel pressure promotes carbon buildup on nozzles.
- High annual mileage – A city bus may run 60,000–80,000 km per year, double a long-haul truck.
- Fuel quality variation – Buses often refuel at different depots, increasing contamination risk.
Result: Injectors in these applications typically last 200,000–300,000 km, compared to 400,000+ km in highway use. Regular maintenance is critical.
6. Maintenance Schedule for High-Hour Operation
Based on feedback from fleet customers, follow this schedule to maximize injector life:
| Interval | Action |
|---|---|
| Every 20,000 km | Replace fuel filter and water separator. |
| Every 50,000 km | Perform return flow test (measure each injector). Replace any injector with return flow >50 ml/min. |
| Every 100,000 km | Remove injectors for ultrasonic cleaning and spray pattern check. |
| Every 200,000 km | Consider full injector replacement (especially in high-idle fleets). |
Early warning signs for fleet maintenance logs:
- Increased black smoke during acceleration
- 5%+ drop in fuel economy
- Rough idle when A/C or other auxiliaries are on
- Check engine light with injector balance codes
7. Real Customer Case: Southeast Asia Bus Fleet (12 Units)
The customer:
A public transportation operator in Manila, Philippines, managing a fleet of 12 Yutong city buses equipped with Cummins ISBe engines. Each vehicle averages approximately 70,000–80,000 km of operation per year under stop-and-go urban driving conditions.
The situation:
The maintenance team had been experiencing recurring injector-related issues across several buses, including excessive black smoke during acceleration, unstable idle speed, and occasional loss of engine power. Some injectors previously sourced from the local market required replacement after approximately 4–6 months of service.
Repeated maintenance downtime was beginning to affect fleet scheduling and operating costs.
How we helped:
The customer initially requested a small trial order for two vehicles (6 injectors total). We supplied:
- Brand-new 0445120007 injectors
- Individual injector test reports
- Pre-labeled IQA codes
- Basic injector maintenance recommendations and service record templates
The result:
After approximately 8 months of operation, the customer reported that the trial buses showed stable performance with no abnormal injector symptoms during routine inspections. The maintenance team also observed:
- Reduced visible exhaust smoke
- Smoother idle performance
- Fewer unscheduled maintenance events compared with previously used units
Following the evaluation period, the operator gradually expanded replacement across additional vehicles in the fleet and introduced a preventive injector inspection schedule at around 50,000 km intervals.
Customer feedback:
“Compared with some of the remanufactured units we used before, maintenance frequency became lower and vehicle operation was more stable. The maintenance team spent less time dealing with injector-related issues.”
— Fleet Maintenance Supervisor, Manila
8. FAQ
How long do 0445120007 injectors last in city buses?
Typically 200,000–300,000 km with proper fuel filtration and regular maintenance. In our Manila case, buses passed 8 months (approx. 50,000 km) without issues.
Does this injector fit DAF LF 45 trucks?
Yes. Verified compatibility: DAF LF 45 FA 45.220 (162kW), FA 45.150 (110kW), FA 45.170 (123kW), and FA 45.180 (136kW).
Does it fit Iveco EuroCargo?
Yes. The 0445120007 is listed for Iveco EuroCargo with Tector engines.
What is the warranty on your injectors?
6 months unconditional warranty covering manufacturing defects.
Do you offer bulk pricing for fleets?
Yes. We have tiered discounts for orders of 12+ injectors (one full engine set) and larger fleet quantities.
How do I know if my injector needs cleaning or replacement?
Start with a return flow test. If return flow exceeds 50 ml/min or you see black smoke and power loss, replacement is more cost‑effective than cleaning in most cases.
What is the IQA / IMA code?
Bosch calls it an IMA code (also known as IQA or ISA) – a 7‑character code (letters and numbers, excluding J, Q, and 0) programmed into the ECU to fine-tune fuel delivery for each injector. We provide the correct code on every injector.
9. Related Models & Internal Links
Other injector models in our 0445120xx series – full technical guides:
- 0445120123 Common Rail Injector for Cummins ISBe Guide
- 0445120059 – Komatsu PC200‑8 excavator, Cummins QSB6.7
- Top 10 Cummins Diesel Engines: Power, Specs & Applications
- Common Rail Injector 0445120461 for Weichai Engine
10. Summary & Our Commitment
10.1 Key Points
- We supply 100% new aftermarket injectors compatible with Bosch 0445120007 / Cummins ISBe.
- Quality verified on imported professional test equipment.
- 6‑month warranty – honest coverage.
- Trusted by bus fleets in Southeast Asia, Africa, and the Middle East.
- Real technical support – not just parts. Our Manila fleet case proves our reliability.
10.2 When You Buy From Us
You get:
- A product that has been individually tested
- Free fleet maintenance advice (return flow test schedule, cleaning intervals)
- Help with engine matching if you are unsure
- A team that understands high‑mileage commercial vehicle needs
10.3 Contact & Inquiries
Looking for Fuel Injector 0445120059 pricing or technical matching support?
Send us your engine model or injector part number, and our team will provide fast compatibility confirmation and quotation support within 24 hours.
Disclaimer
Bosch and Cummins part numbers are used for compatibility and identification purposes only. All products described in this article are aftermarket replacement parts and are not claimed to be original Bosch or Cummins products unless explicitly stated.
Vehicle compatibility may vary depending on engine calibration and regional specifications. Professional verification before installation is recommended.
