0445120203
BOSCH 0445120203 MAN D2876 Truck Injector
51.10100-6131, 51.10100-6090F00RJ02561DLLA141P21671600 bar peak rail pressureProduct Overview
The BOSCH 0445120203 is a CRIN2-16 common rail injector assembly engineered for MAN truck heavy-duty platforms. The F00RJ02561 solenoid control valve meters fuel flow via current-driven pilot injection, supporting a 1600 bar peak rail pressure with stable multi-pulse combustion. The DLLA141P2167 hole-type nozzle atomizes fuel with precision-engineered spray pattern optimized for MAN engine combustion chamber geometry. Shares the F00RJ02561 valve group with sister SKUs 0445120368, 0445120441, 0445120437 but each variant carries a unique IMA calibration code stamped on the magnet assembly - NOT interchangeable without ECU re-flash. OEM reference is MAN part number 51.10100-6131 (also 51.10100-6090). Turbo Diesel UK offers 24-month unlimited mileage warranty for genuine Bosch units.
Verify the F00RJ02561 control valve stamping and DLLA141P2167 nozzle (Bosch 0433172167) match your MAN engine serial number before installation. 0445120203 shares the F00RJ02561 valve group with 0445120368, 0445120441, 0445120437 but is NOT interchangeable - each carries a unique IMA/Trim code.
Vehicle & Engine Fitment
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 0445120203 |
| Brand | BOSCH |
| Type | Complete Injector Assembly (CRIN2-16) |
| OE Reference | 51.10100-6131 / 51.10100-6090 |
| Nozzle CodeCore Spec | |
| Nozzle TypeCore Spec | |
| Control ValveCore Spec | |
| Control Valve BallCore Spec | |
| Control Valve BearingCore Spec | |
| Magnet Assembly | F00RJ02703 |
| Tensioning Nut | F00RJ01005 |
| Compression Spring | F00RJ01006 |
| Injection System | Common Rail (CRIN2-16) |
| Operating PressureCore Spec | |
| Solenoid Voltage | 12V DC |
| Material | Hardened steel body, ceramic-tipped nozzle |
| Net Weight | 600 g |
| Warranty | 24 months (Bosch genuine, unlimited mileage) |
| Emission Standard | Euro 4/5 |
| Engine Family | MAN D2876LF series |
| Engine Displacement | 12.8 L (6-cylinder inline) |
| Power Range | 400-440 HP |
| Vehicle Application | MAN TGA/TGS/TGX heavy trucks, F2000, 6x4 tractors |
| Seal Ring Kit | F00RJ02176 |
Installation Tips
- Execute the mandatory two-wrench counter-hold method when securing high-pressure line fittings: hold the injector inlet connector steady using an open-ended counter-hold wrench while torquing the fuel rail delivery pipe nut to 45-50 N·m, preventing any rotational displacement of the injector or damage to internal seals.
- Thoroughly clean the cylinder head injector bore down to the base metal using a non-abrasive brass cleaning brush, discard the used copper washer, and fit a new seal from Seal Ring Kit F00RJ02176; apply a thin, uniform film of high-temperature ceramic anti-seize paste exclusively along the injector body shaft, ensuring no paste contacts the nozzle tip, nozzle cap nut, or copper seating surface.
- Torque the hold-down clamp bolt to 25-30 N·m (follow MAN workshop manual for D2876LF engine). Write the individual multi-digit IMA trim code stamped on the solenoid body into the ECU using an authorized diagnostic scan tool, then manually prime and vent the low-pressure fuel circuit before cranking to avoid cavitation damage to Control Valve F00RJ02561 and Nozzle 0433172167.
Frequently Asked Questions
How do I verify BOSCH 0445120203 is the correct replacement for my MAN truck?
Check the OE stamping matches MAN part number 51.10100-6131 or 51.10100-6090. The 10-digit SKU 0445120203 should match the build plate on the original injector, and the DLLA141P2167 nozzle stamping (0433172167) should be visible. The IMA/Trim code is unique - cross-reference via BOSCH ESITronic or your MAN dealer. Do NOT substitute 0445120368 without verifying the IMA code - the F00RJ02561 valve group is shared but calibration differs.
What is the control valve code for 0445120203?
F00RJ02561 is the primary control valve for 0445120203 and 4 sister SKUs in the F00RJ02561 group: 0445120203, 0445120368, 0445120441, 0445120437. The CRIN2 magnet assembly is F00RJ02703. Same valve group but different IMA/Trim code per SKU - NOT interchangeable without ECU re-coding.
Why is my 0445120203 not interchangeable with 0445120368?
Both share the F00RJ02561 control valve, but each carries a unique IMA/Trim code. Installing 0445120368 in an application that specifies 0445120203 will trigger P0201-P0206 fault codes and may cause over-fueling (black smoke) or hard starting. Always verify the OE number (51.10100-6131 for 0445120203) and the IMA/Trim code stamped on the F00RJ02703 magnet assembly.
What are the common failure modes for 0445120203 in MAN heavy trucks?
Typical failures for MAN applications: (1) F00RJ02561 control valve wear causing over-fueling after 200,000-300,000 km; (2) DLLA141P2167 nozzle coking from contaminated fuel; (3) F00RJ02703 CRIN2 magnet assembly coil failure (P0201); (4) high-pressure line sealing washer failure; (5) ball seat erosion from abrasive fuel contaminants (Bosch documents this as the most common failure cause for European common rail injectors). Recommend replacement at 250,000 km or first symptom.
How to test 0445120203 CRIN2 magnet assembly with multimeter?
Disconnect the electrical connector from the F00RJ02703 magnet assembly, set multimeter to 200 ohm range, measure across solenoid terminals. Normal resistance: 0.5-2.0 ohm cold (engine off 30 min). Open circuit (>10 M ohm) = replace. Short circuit (<0.1 ohm) = replace. After replacement, the IMA/Trim code must be written to the ECU via BOSCH KTS 590 or ESITronic scanner.
What fuel pressure does 0445120203 require?
Peak rail pressure 1600 bar in CRIN2-16 common rail. Low-pressure feed 4-6 bar. If rail pressure drops below 1400 bar under load, suspect a worn F00RJ02561 valve or clogged DLLA141P2167 nozzle. Also check high-pressure connector torque - MAN D2876 engines are particularly sensitive to loose fuel line fittings.
Can I install 0445120203 myself?
Mechanical install is moderate (25-30 N·m on CRIN2 hold-down clamp, 45-50 N·m on high-pressure line, 15mm/17mm 2-wrench method), but ECU IMA/Trim coding requires BOSCH KTS 590 or ESITronic. Without coding, expect rough running and emissions failures. Most workshops: 3-4 hours total. Critical: insert vertically - any tilt damages the F00RJ02561 valve.
What is the warranty on 0445120203?
Genuine Bosch units (verified by Turbo Diesel UK official channel) carry 24 months unlimited mileage warranty. Aftermarket/copy units typically 6-12 months. Warranty covers manufacturing defects, F00RJ02703 magnet assembly failure, DLLA141P2167 nozzle defects. Does not cover contaminated fuel, incorrect installation (tilted insertion, over-torque), or failure to write IMA/Trim code. Keep installation record and BOSCH ESITronic coding log.
Is 0445120203 compatible with Euro 3 emissions?
0445120203 is rated for Euro 4/5 (D2876LF12 / D2876LF13). It can also be used in Euro 3 applications (D2876LF02) because F00RJ02561 and DLLA141P2167 are shared. For Euro 6 MAN engines, the system adds SCR + DPF + EGR post-treatment and the IMA calibration differs - the 0445120437 SKU is the typical Euro 6 upgrade option.
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.