0445110305
BOSCH 0445110305 Common Rail Injector for JMC Baodian / Kaiyun 2.8L TDCi (4JB1 / JX493)
1112100CATF00VC01359DLLA82P16681600 barProduct Overview
The Bosch 0445110305 is a second-generation solenoid-actuated common rail diesel injector engineered for light commercial and industrial powertrain platforms operating up to a peak dynamic rail pressure of 1600 bar. Designed to execute micro-second multi-pulse injection strategies, this unit facilitates highly accurate pilot, main, and post-injection metering to suppress combustion rattle and maintain rigorous Euro 3 and Euro 4 emission standards. It delivers fuel delivery consistency across wide engine speed ranges on high-efficiency diesel platforms including the 4JB1, 4JB1-TC, JX493, and JX493ZQ engine families.
Technicians must cross-reference the cylinder head build plate with OE 1112100CAT before installation, as mounting an uncalibrated injector without programming its unique alphanumeric IMA code into the engine control unit will cause severe cylinder imbalance and rough idle.
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| JMC Baodian Pickup 2.8 TDCi | Isuzu / JMC 4JB1 2.8L (JX493 / 4D24 Common Rail) | 2008-2016 |
| JMC Kaiyun Light Commercial Truck 2.8 | Isuzu / JMC 4JB1 2.8L (JX493 / 4D24 Common Rail) | 2008-2016 |
| JMC Yuhu Pickup 2.8 TDCi | Isuzu / JMC 4JB1 2.8L (JX493 / 4D24 Common Rail) | 2010-2018 |
| JMC Shunda Light Truck 2.8 | Isuzu / JMC 4JB1 2.8L (JX493 / 4D24 Common Rail) | 2008-2016 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 0445110305 |
| Brand | BOSCH |
| Product Type | Complete Solenoid Common Rail Injector Assembly |
| Control ValveCore Spec | |
| Nozzle CodeCore Spec | |
| Engine Family | Isuzu / JMC 4JB1 2.8L (JX493 Common Rail) |
| Operating PressureCore Spec | |
| Emission Standard | Euro 3 / Euro 4 |
| Magnet Assembly | F00VC30318 |
| Seal Ring Kit | F00VC99002 |
Installation Tips
- Always employ a two-wrench counter-hold procedure when securing the high-pressure fuel supply line: hold the injector inlet body firmly with an open-ended wrench while torqueing the high-pressure line union nut to exactly 25-28 N·m using a calibrated crowfoot wrench, and tighten the hold-down clamp bolt to 28-32 N·m to avoid internal valve spindle shear damage and body distortion.
- Thoroughly clean the cylinder head injector bore down to bare metal using a non-abrasive brass brush and vacuum out all carbon debris before installing a replacement washer from seal ring kit F00VC99002; apply a light film of high-temperature non-metallic ceramic anti-seize paste strictly to the injector body shaft, ensuring zero compound contacts the nozzle tip or copper washer seating surface.
- Prior to the initial cold start, register the injector's specific IMA calibration code into the vehicle ECU using a bidirectional diagnostic scan tool, then manually prime the low-pressure fuel circuit to thoroughly purge air pockets and prevent unlubricated friction damage to internal metering components during cranking.
Frequently Asked Questions
What is the OE cross-reference for this injector?
The primary original equipment manufacturer cross-reference for Bosch injector 0445110305 is OE 1112100CAT, commonly installed on JMC and Isuzu-derived 4JB1, 4JB1-TC, JX493, and JX493ZQ engines.
What control valve / actuator is used?
This solenoid-actuated injector utilizes control valve F00VC01359, magnet assembly F00VC30318, and nozzle 0433172024 to meter fuel discharges at dynamic line pressures up to 1600 bar.
Does this injector require ECU IMA coding?
Yes, injector 0445110305 requires mandatory ECU IMA trim coding. The individual alphanumeric calibration code etched into the magnet assembly housing represents precise hydraulic flow tolerances that the engine ECU must read to calibrate cylinder balancing and pilot injection quantities.
What are the common failure symptoms and associated DTC codes?
Common failure modes include internal control valve wear resulting in excessive back-leakage, hard starting when warm, rough idling, engine knocking, and unburned fuel smoke. Typical DTCs stored include P0087 (fuel rail pressure too low), P0201-P0204 (injector circuit electrical faults), and cylinder balance regulation limit codes such as P1011 or P1012.
What are the proper installation torque specifications?
The hold-down clamp bolt must be torqued to 28-32 N·m to guarantee seal compression without buckling the casing. The high-pressure fuel line union nut must be tightened to 25-28 N·m while counter-holding the inlet fitting.
How do you perform a dynamic back-leakage flow bench test?
Mount the injector on a common rail test stand, operate at calibrated testing pressures, and measure fuel bypass returning through the spill port. Under test standards, idle back-leakage must remain <= 35 ml/min, and full-load leak-off must not exceed <= 50 ml/min; higher volume indicates severe erosion of the valve seat.
What is the acceptable solenoid coil electrical resistance?
The electrical resistance across the two solenoid coil electrical pins must measure between 0.25-0.50 ohms at 20°C ambient temperature. In addition, an insulation resistance test from either terminal pin to the injector metal body should yield infinite resistance (greater than 10 megohms at 500V DC).
Why is the two-wrench installation procedure strictly mandatory?
Tightening the high-pressure fuel line union nut without counter-holding the injector inlet fitting transfers excessive rotational torque directly into the injector body. This torsional stress can distort internal tolerances, rotate guide dowels, and shear control valve F00VC01359 out of alignment, resulting in massive internal fuel leakage and immediate injector failure.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Cross-Reference & Compatibility
Sister parts, same-platform variants, and known incompatibilities.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.