0445120048
BOSCH 0445120048 Common Rail Injector for Mitsubishi Fuso Fighter 6M60 Super Great
ME222914, ME226718, 107755-0162, 1077550162F00RJ01428DLLA157P14241600 barProduct Overview
The Bosch 0445120048 is a heavy commercial CRIN2-16 common rail diesel fuel injector engineered for Mitsubishi Fuso medium and heavy-duty commercial vehicles powered by the 6M60 (7.5L) and 6M70 (12.9L) turbodiesel platforms, including Fuso Fighter trucks and Super Great transport tractors. Operating at fuel rail pressures up to 1600 bar, this assembly utilizes control valve F00RJ01428, hole-type nozzle 0433171886 (stamped DLLA157P1424), and magnet assembly F00VC30301 to deliver precise multi-pilot injection sequences satisfying Euro 3 and Euro 4 commercial emissions. Common high-hour workshop failure symptoms include excessive dynamic fuel backleakage into the cylinder head return gallery, extended hot-cranking, unburned black exhaust smoke under acceleration, and diagnostic trouble code P0087 accompanied by engine derate.
CRITICAL FEED CONNECTOR TORQUING: When installing injector 0445120048 on Mitsubishi Fuso 6M60 engines, always torque the hold-down clamp bolt to 26-30 N·m first to establish positive copper washer crush. Counter-hold the high-pressure fuel rail line fitting using a second wrench when torquing to 30-35 N·m to prevent twisting or shearing the internal alignment pins.
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Mitsubishi Fighter Commercial Truck FK / FM / FN Series | Mitsubishi Fuso 6M60 / 6M70 (7.5L & 12.9L) | 2002-2010 |
| Mitsubishi Super Great Heavy Duty Truck FS / FU / FV | Mitsubishi Fuso 6M60 / 6M70 (7.5L & 12.9L) | 2003-2010 |
| Mitsubishi Aero Bus / Aero Queen Commercial Coach | Mitsubishi Fuso 6M60 / 6M70 (7.5L & 12.9L) | 2003-2009 |
Technical Specifications
| Specification | Value |
|---|---|
| Fuel System | Bosch Common Rail (CRIN2-16) |
| Peak Pressure | 1600 bar |
| Control ValveCore Spec | 🔗 Shared Valve (2 assemblies):0445120049 |
| Nozzle CodeCore Spec | |
| Nozzle Part NumberCore Spec | |
| Magnet Assembly | F00VC30301 |
| Seal Ring Kit | F00RJ02176 |
| Hold-down Clamp Torque | 26-30 N·m📐 Torque & Angle Wizard → |
| High Pressure Line Torque | 30-35 N·m |
| Coding Standard | Bosch IMA (6/7-Character Alphanumeric) |
| Operating PressureCore Spec |
Installation Tips
Tools needed: Calibrated torque wrench and line crowfoot tool, Brass injector bore seat brush kit and industrial vacuum extraction unit, Dedicated electronic diagnostic tool for IMA/injector coding
- Thoroughly ream and clean the cylinder head injector well down to bare metal using a brass cleaning brush; blow out all debris and verify the copper washer seating face is clean and unpitted.
- Fit a genuine new copper sealing washer (standard 1.5mm) onto the nozzle tip, and lubricate the viton body O-ring with clean engine oil.
- Lower the 0445120048 injector assembly straight into the cylinder head bore, aligning the electrical solenoid connector toward the wiring harness harness gallery.
- Torque the injector hold-down clamp bolt to its final specification of 26-30 N·m to achieve uniform copper washer crush and sealing.
- Connect the high-pressure fuel rail feed line using the 2-wrench counter-hold method, torquing the line nut to 30-35 N·m.
- Attach the electrical solenoid harness connector securely, verifying terminal locking clips engage.
- Programme the unique alphanumeric IMA calibration code into the Fuso engine control module via diagnostic tool, and prime the low-pressure fuel circuit before initial engine start.
- 2-Wrench Counter-Hold Mandate: When torquing the high-pressure fuel rail line to 30-35 N·m, always counter-hold the injector inlet body with a second open-ended wrench. Unopposed torque twists the injector in its bore, compromising copper washer seal alignment and risking locating pin fracture.
- Cylinder Well Cleaning Verification: Carbon deposits under the copper washer alter nozzle protrusion into the combustion chamber. This causes poor atomization, excessive exhaust smoke, and localized cylinder temperature spikes.
- Inspect Copper Sealing Seat: Ensure only one copper washer is installed. Leaving an old washer in the bore alters combustion geometry and leads to severe engine misfire and blow-by leakage.
Frequently Asked Questions
What symptoms indicate a failing Bosch 0445120048 injector on Mitsubishi Fuso 6M60 engines?
Common symptoms include hard starting when hot due to excessive internal backleakage through control valve F00RJ01428, rough idle, black exhaust smoke under acceleration from nozzle DLLA157P1424 wear, and fault code P0087 (Rail Pressure Below Minimum).
Is ECU coding required after installing injector 0445120048?
Yes. The 0445120048 injector features an individually calibrated alphanumeric IMA code on the solenoid head. This value must be written to the Fuso engine ECU via diagnostic scanner to ensure proper cylinder fuel balancing.
What are the primary OE part numbers for 0445120048?
Primary OEM references include Mitsubishi Fuso ME222914 and ME226718, and Zexel references 107755-0162 and 1077550162.
What dynamic backleak rate is acceptable during bench testing?
Under full-load test bench conditions (1600 bar), dynamic return leakage should not exceed 45 ml/min per injector. Leakage exceeding 50 ml/min confirms control valve F00RJ01428 seat erosion.
What is the correct coil resistance for solenoid testing?
Measured across the two solenoid terminals at 20°C ambient temperature, coil resistance must be between 0.25 and 0.50 Ohms. Resistance outside this range indicates winding degradation and triggers circuit fault codes P0201-P0206.
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.