0445120134
Bosch 0445120134 Injector | Weichai 612600080618 WP12
612600080618, 612600080971, 0445120227, 0445120228F00RJ01692DLLA150P18281600 barVehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Shacman Delong Heavy Trucks (F3000, X3000) | Weichai WP10 / WP12 (9.7L & 11.6L Heavy Commercial) | 2009-2020 |
| Sinotruk HOWO A7 / T7H Commercial Vehicles | Weichai WP10 / WP12 (9.7L & 11.6L Heavy Commercial) | 2010-2019 |
| Foton Auman GTL / ETX Dump Trucks | Weichai WP10 / WP12 (9.7L & 11.6L Heavy Commercial) | 2010-2020 |
| Beiben Heavy Duty Tractors (2638, 2642) | Weichai WP10 / WP12 (9.7L & 11.6L Heavy Commercial) | 2010-2021 |
Technical Specifications
| Specification | Value |
|---|---|
| INJECTOR TYPE | Common Rail Injector |
| SYSTEM PLATFORM | CRI |
| CONTROL VALVECore Spec | |
| NOZZLE CODECore Spec | |
| OPERATING PRESSURECore Spec |
Frequently Asked Questions
Which commercial trucks and heavy vehicles use Bosch injector 0445120134?
Bosch 0445120134 is designed for Weichai WP12 series (11.6L, Euro 3 / Euro 4) heavy commercial diesel engines. It is widely installed on Shacman Delong F3000 / X3000, Sinotruk HOWO A7 / T7H, Foton Auman GTL, Beiben 2638 heavy-duty tractor and dump trucks, as well as XCMG mobile cranes from 2009 to 2020.
What are the Weichai OE numbers and nozzle specifications for Bosch 0445120134?
Weichai OE part numbers are 612600080618 and 612600080971, superseded by 0445120227, with Bosch remanufactured reference 0986435553. The injector assembly features the Bosch DLLA150P1828 nozzle and operates on the CRIN2-16 (1,600 bar) platform.
What is the hold-down clamp bolt torque for Weichai WP12 injectors?
Tighten the M8 injector hold-down clamp bolt to 30 N·m + 90° angle. Always seat a new copper washer on the injector tip and verify that the cylinder head bore is completely free of carbon build-up.
Does Bosch 0445120134 require IMA calibration coding into the Weichai ECU?
Yes. Each injector has an alphanumeric IMA code stamped on the top connector. Entering this code into the Weichai WISE/EDC7 engine ECU ensures accurate fuel metering, quiet idle operation, and compliance with exhaust emission standards.
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.