0445120357
0445120357 Bosch Cummins ISDe 6.7L Injector: 4988835 Data
4988835, 5263308, 4988834, 5263307, C4988835, C5263308F00RJ01692DLLA144P17071600 barVehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Dongfeng Tianlong / Tianjin Cargo Trucks | Cummins ISB / QSB 6.7L (ISDe / Komatsu SAA6D107E) | 2008-2020 |
| Foton Auman / GTL Commercial Trucks | Cummins ISB / QSB 6.7L (ISDe / Komatsu SAA6D107E) | 2009-2019 |
| Yutong City Transit & Intercity Buses | Cummins ISB / QSB 6.7L (ISDe / Komatsu SAA6D107E) | 2009-2021 |
Technical Specifications
| Specification | Value |
|---|---|
| INJECTOR TYPE | Common Rail Injector |
| SYSTEM PLATFORM | CRI |
| CONTROL VALVECore Spec | |
| NOZZLE CODECore Spec | 🔗 Shared Nozzle (2 assemblies):0445120122 |
| OPERATING PRESSURECore Spec |
Frequently Asked Questions
Which Cummins engines and commercial vehicles utilize Bosch injector 0445120357?
Bosch 0445120357 is calibrated for Dongfeng Cummins ISDe 4.5L and 6.7L (Euro 3 / Euro 4) and QSB 6.7L Tier 3 industrial engines. It fits Dongfeng Tianlong, Dongfeng Tianjin, Foton Auman cargo trucks, Yutong and King Long transit buses, and XCMG / Liugong / SDLG construction equipment from 2008 to 2021.
What are the genuine Cummins OE numbers for Bosch 0445120357?
Genuine Cummins OE part numbers include 4988835, 5263308, 4988834, and 5263307, with Bosch exchange reference 0986435557. It belongs to the heavy-duty Bosch CRIN2-16 platform.
What connector tube installation sequence is required for Cummins ISDe 6.7L?
Strictly observe the feed tube tightening sequence: install the injector and hand-tighten the clamp bolt; insert the high-pressure connector tube and torque its collar nut to 15 N·m to establish centering; then torque the injector hold-down bolt to its final specification of 65 N·m (or 30 N·m + 90°); and finally torque the connector tube collar nut to its full specification of 50 N·m.
Does Bosch 0445120357 require calibration coding after replacement?
Yes. The alphanumeric IMA code on the injector solenoid connector must be programmed into the Cummins CM2150 / CM850 ECM using Cummins INSITE or Bosch KTS diagnostic tools to balance fueling across all cylinders.
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.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.