The 0445110305 injector is a key component for JMC and Isuzu light diesel engines (4JB1, 4JH1), powering pickups, light trucks, and vans. This guide covers verified specifications, compatible vehicle models, pre‑installation testing procedures (coil resistance and return flow), and a real customer case from a Guangzhou repair shop that saved weeks of troubleshooting. All injectors are 100% new aftermarket units, tested on imported professional common rail equipment, and backed by a 6‑month warranty.
Industry Experience
We supply diesel fuel injection components for JMC, Isuzu, and Chinese light-duty commercial vehicles to customers across China, Africa, Southeast Asia, and overseas service markets.
Our focus includes:
- Accurate injector matching
- Pre-installation testing guidance
- Injector calibration and installation guidance
- Cost-effective fleet maintenance solutions
Quick Navigation
- 1. Product Overview: Aftermarket New vs OEM
- 2. Technical Specifications
- 3. Compatible Engines & Vehicle Applications
- 4. Quality Assurance: How We Ensure Reliability
- 5. Common Symptoms of a Failing Injector
- 6. Pre‑Installation Testing: How to Verify an Injector Before Fitting
- 7. Real Customer Case: Guangzhou Repair Shop
- 8. Related Models & Internal Links
- 9. FAQ – Bosch 0445110305 Common Rail Injector
- 10. Summary & Our Commitment
1. Product Overview: Aftermarket New vs OEM
1.1 Basic Information
| Parameter | Details |
|---|---|
| Bosch numbers | 0445110305 / 0 445 110 305 |
| Product type | High‑pressure common rail solenoid injector – 100% new aftermarket part (not remanufactured) |
| Primary applications | JMC 4JB1/4JH1, Isuzu light diesel engines (2.8L, 3.0L) |
| Technology | CRIN2 compatible (solenoid, system pressure up to 2500 bar) |
| Fuel Type | Diesel |
| Condition | brand New |
1.2 Why Choose Our Aftermarket New Injector
- Price advantage – Significantly lower than JMC or Isuzu dealer pricing.
- New components – All parts brand new (solenoid, needle, nozzle, springs). No reused internals.
- Quality tested – Each unit tested on imported professional common rail test equipment. Reports available on request.
1.3 Our Track Record
| Metric | Performance |
|---|---|
| Annual sales volume (0445110305 compatible) | Around 1,000 units supplied annually |
| Customer satisfaction | Positive feedback from fleets and repair shops |
| Warranty | 6 months unconditional |
Based on internal records and customer feedback over the past 12 months.
2. Technical Specifications – 0445110305 Injector
All values are industry standard for Bosch CRIN2 (CRI2) injectors. Our aftermarket new injectors meet or exceed these specifications.
| Parameter | Specification |
|---|---|
| Bosch numbers | 0445110305 / 0 445 110 305 |
| Type | High‑pressure common rail solenoid injector |
| Platform | Bosch CRI2 (CRIN2) |
| System pressure (operating) | 1600–1800 bar |
| Nozzle type | DLLA82P1668 (multi‑hole laser‑drilled) |
| Nozzle holes | 6 |
| Control valve | F00VC01359 |
| Calibration | IQA trim code included |
| Coil resistance (20°C) | 0.2 – 0.6 Ω |
| Return flow @ idle | typical workshop reference range: ≤ 35–45 ml/min |
| Weight | approx. 0.6 kg |
Note: System pressure refers to common rail operating pressure, not injector opening pressure. The 0445110305 is a CRI2 (solenoid) injector designed for reliable operation in light commercial vehicles. Specifications are based on Bosch CRIN2 platform references and field testing from common rail injector repair equipment.
3. Compatible Engines & Vehicle Applications
3.1 Primary Engines
| Engine Model | Displacement | Applications |
|---|---|---|
| JMC 4JB1 | 2.8L | JMC pickups, light trucks, vans |
| JMC 4JH1 | 3.0L | JMC commercial vehicles |
| Isuzu 4JB1 / 4JH1 | 2.8L / 3.0L | Various light diesel applications |
| FAW CA4DC | — | Cross‑reference applications |
| Xichai 4DW | — | Variant in Chinese commercial diesel systems |
3.2 Known Vehicle Fitments
| Category | Specific Models |
|---|---|
| JMC pickups | JMC Yuhu, JMC Treasure (Baodian) – Euro III / Euro IV versions |
| JMC light trucks | JMC Carrying, JMC Kaiyun |
| Isuzu platforms | Isuzu light trucks and pickups using 4JB1/4JH1 engines |
| JMC vans | JMC Teshun, JMC Quanshun |
| FAW light trucks | Select FAW light trucks (cross‑reference) |
Always confirm compatibility using your old injector part number, engine code, or vehicle VIN – regional emission calibrations may vary.
3.3 OEM / Cross‑Reference Numbers
| Brand / System | Part Number |
|---|---|
| Bosch | 0445110305 / 0 445 110 305 |
| Control valve | F00VC01359 |
| Nozzle reference | DLLA82P1668 |
| Alternative reference | 0986435231 (Bosch aftermarket) |
4. Quality Assurance: How We Ensure Reliability
4.1 Testing Process
Every injector we ship undergoes functional testing on imported professional common rail test equipment, including:
- High‑pressure leak test
- Injection quantity measurement at multiple load points
- Return flow measurement
- Solenoid electrical response (coil resistance, opening delay)
Test reports available on request.
4.2 Warranty & Support
- 6 months warranty – covers manufacturing defects. Does not cover damage from contaminated fuel, improper installation, or incorrect application.
- Free technical support – Pre‑installation testing guidance, coding help, and vehicle matching via email/WhatsApp.
5. Common Symptoms of a Failing 0445110305 Injector
Based on real workshop feedback from JMC and Isuzu light truck fleets, these are the most frequent symptoms:
| Symptom | Likely Cause |
|---|---|
| Black smoke under acceleration | Clogged nozzle (fuel contamination) |
| Rough idle / uneven running | Incorrect IQA coding or needle wear |
| Hard starting (cold or hot) | Internal leakage – worn valve seat or seal |
| Excessive return flow (≥50 ml/min) | Internal wear (valve group) |
| Loss of power on hills | Injector not delivering full quantity |
| Check engine light | Injector circuit fault or balance code |
For JMC 4JB1 engines, fuel contamination is the #1 cause of premature injector failure. Regular filter changes are essential.
6. Pre-Installation Testing of 0445110305 Injector: How to Verify Before Fitting
Before installing a new injector – even a brand new one – it is good practice to perform two simple electrical and mechanical checks. This step takes less than 5 minutes and can prevent unnecessary rework.
6.1 Coil Resistance Test (Electrical)
Use a digital multimeter set to ohms (Ω). Measure across the two electrical terminals on the top of the injector.
| Measurement | Result | Action |
|---|---|---|
| 0.2 – 0.6 Ω | ✅ Normal | Proceed with installation |
| Open circuit (OL) | ❌ Coil failure | Do not install – return for replacement |
| Near 0 Ω (short) | ❌ Coil failure | Do not install – return for replacement |
This test confirms the solenoid coil is electrically sound. A faulty coil will cause a “no start” on that cylinder or injector circuit fault codes.
6.2 Return Flow Bench Test (Mechanical)
If you have access to a common rail test bench, measure return flow at idle simulation. If you do not have a test bench, a simple hand‑pump and graduated cylinder test can be performed (contact us for a DIY guide).
| Return Flow @ Idle | Status | Action |
|---|---|---|
| ≤ 35 ml/min | ✅ Healthy | Normal installation |
| 35 – 50 ml/min | ⚠️ Caution | Acceptable but monitor; consider sooner replacement cycle |
| > 50 ml/min | ❌ Failed | Do not install – internal wear present |
Why this matters: Even brand new injectors can rarely have manufacturing defects. Performing these two checks before installation has saved our customers from days of troubleshooting.
We provide free testing guidance – just ask.
7. Real Customer Case: Guangzhou Repair Shop – How Pre‑Installation Testing Saved a JMC Pickup
The customer: A small repair shop in Guangzhou specializing in JMC and Isuzu light trucks.
The situation: The shop received a 2015 JMC Yuhu pickup (4JB1 engine) with complaints of black smoke, rough idle, and intermittent power loss. The mechanic had already replaced the injectors twice with low‑cost remanufactured units from another supplier, but the problem returned each time after a few weeks.
How we helped: The customer ordered a set of 4 new 0445110305 injectors from us. Before installation, we recommended they perform the coil resistance test and a return flow bench test (as described in Section 6). The shop had a basic common rail test bench and followed our guidance.
The testing result:
- All 4 injectors passed the coil resistance test (0.3 – 0.5 Ω).
- Return flow was measured: three injectors showed 28–32 ml/min (healthy); one injector showed 48 ml/min – in the caution range but still above ideal. The shop contacted us, and we immediately sent a replacement injector with return flow of 31 ml/min.
The result after installation: With the matched set of 4 healthy injectors and correct IQA coding, the JMC pickup started smoothly, idled cleanly, and showed no black smoke under full load. The shop owner later told us:
“Without your pre‑installation test advice, I would have installed the set as‑is and likely blamed the injectors when the truck still ran poorly. The extra 10 minutes of testing saved me days of rework.”
The shop has since ordered injectors for three more JMC trucks and now makes pre‑installation testing a standard part of their workflow.
8. Related Models & Internal Links
Other injector models in our 0445110xx series – full technical guides will be published this week:
- Bosch 0445110541 Injector Specs for JMC 4JB1T, Isuzu & Xichai Engines
- 0445110646 – Heavy‑duty light truck injector for Isuzu 4JJ1 applications
- Weekly industry summary – Light commercial diesel trends & fleet maintenance recap
- Common Diesel Engine Problems in Trucks and How to Fix Them
9. FAQ – 0445110305 Common Rail Injector
How long do 0445110305 injectors last in JMC pickups?
Typically 150,000–200,000 km with proper fuel filtration and correct IQA coding. Clean fuel is the most important factor.
Does this injector fit all JMC 4JB1 engines?
Yes, for Euro III and Euro IV versions. Confirm using your original injector part number.
What is the warranty on your injectors?
6 months unconditional warranty covering manufacturing defects.
Do I need a diagnostic tool to code the injector?
Yes. IQA coding requires a diagnostic tool (JMC service tool or multi‑brand diesel scanner). We provide free remote guidance.
How can I test an injector before installation without a test bench?
At minimum, perform the coil resistance test with a multimeter. For return flow, a simple DIY test can be done with a hand primer and graduated cylinder – contact us for instructions.
Do you supply other JMC engine parts?
Yes. We can supply pistons, filters, and other fuel system components for JMC 4JB1/4JH1 and Isuzu light diesel engines.
10. Summary & Our Commitment
10.1 Key Points
- We supply 100% new aftermarket injectors compatible with Bosch 0445110305 / JMC 4JB1 / Isuzu light diesel engines.
- Quality verified on imported professional test equipment (reports available).
- 6‑month warranty – honest coverage.
- Trusted by repair shops and logistics fleets across China.
- Pre‑installation testing guidance – we help you avoid rework.
10.2 When You Buy From Us
You get:
- A product that has been individually tested
- Free pre‑installation testing advice (coil resistance, return flow)
- Help with IQA coding if you are unsure
- A team that understands JMC and Isuzu light diesel systems
Final CTA
Need Help Confirming Compatibility?
To help us match the correct injector, please send:
- Injector part number
- Engine model
- Vehicle VIN (optional)
We provide:
- Compatibility verification
- IQA coding guidance
- Individual injector test reports
- Technical support
- Fast international shipping
For pricing, technical questions, or model matching support, contact us and our team will reply within 24 hours.
Disclaimer
Bosch and Isuzu 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 Isuzu products unless explicitly stated.
Vehicle compatibility may vary depending on engine calibration and regional specifications. Professional verification before installation is recommended.
