Bosch 0445110856 — Common-Rail Fuel Injector (CRI2-18)

 

This 0445110856 common rail injector is a Bosch CRI2-18 solenoid-actuated unit engineered for precise fuel metering in diesel engines requiring high-pressure injection up to 1,600 Bar . As a critical component within the common rail fuel system, this injector governs the timing, quantity, and atomisation quality of fuel delivered to the combustion chamber. The CRI2-18 platform employs a hydraulic control valve and solenoid actuator to manage multiple injection events-pilot, main, and post-which directly influence combustion efficiency, emissions output, and cold-start performance . This unit is offered in both OEM-new and premium remanufactured variants to suit workshop and fleet procurement requirements, with OEM cross-references including 16600-LC30A, 16600-LC30B, and 16600-LC30C .

 

 

This CRI2-18 injector features a solenoid-actuated control valve that modulates pressure within the control chamber, governing needle lift and injection duration with micron-level precision . The internal architecture comprises a control valve assembly, nozzle spring with calibrated shim, and a matched needle/nozzle pair-each component contributing to the injector's hydraulic response characteristics . The unit incorporates a high-pressure seal ring and support ring to isolate fuel passages and manage return flow within specification. The nozzle nut torque specification for CRI2-series injectors is approximately 55 N·m . The injector is supplied either with or without sealing rings depending on supplier-verify contents before ordering . The compact assembly weight is approximately 0.7 kg per unit when packaged .

 

 

Parameter	Specification	Application Notes
Part Numbers	0445110856 / 0 445 110 856	Bosch CRI2-18 platform
OEM Cross-Reference	16600-LC30A, 16600-LC30B, 16600-LC30C	Nissan / Renault / UD Truck references
Sensor Type	Solenoid-actuated	Multi-injection capable (pilot/main/post)
Primary Applications	Nissan Cabstar/NT400 (ZD30DDTi) , Renault vehicles, UD Trucks	Light and medium-duty diesel platforms
Engine Displacement	2,953 cc (ZD30DDTi)	96–150 kW output range
System Pressure	Up to 1,600 Bar	Common rail direct injection
Condition Options	New OEM / Remanufactured / Aftermarket	Verify supplier source and warranty

 

Professional installation of this 0445110856 injector demands adherence to established service procedures. Before fitting, technicians must verify the injector's coding against the ECU-some applications require IMA (Injector Matching Adjustment) codes to be entered via diagnostic equipment to ensure correct fuel trim. The high-pressure seal ring and support ring must be inspected and replaced during installation; reuse of sealing components risks fuel leakage and pressure instability . Always replace the copper washer and O-rings with fresh components to guarantee correct seating. The nozzle nut should be torqued to the manufacturer-specified value of 55 N·m to maintain hydraulic integrity . After installation, perform a leak-off test to verify return flow within specification; bench flow testing (Bosch EPS or equivalent) is strongly recommended for remanufactured units to confirm delivery volumes across all operating ranges .

 

 

A degraded 0445110856 injector manifests through several identifiable symptoms that technicians should recognise: hard cold starts, rough idle, excessive black smoke under load, and fuel dilution of engine oil. These symptoms often result from worn needle/nozzle pairs, contaminated control valve micro-passages, or degraded sealing surfaces that permit internal leakage . In the common rail diesel architecture, injector performance directly impacts DPF regeneration frequency and EGR system stability-a malfunctioning injector can trigger DTCs unrelated to the aftertreatment system . Replacing or rebuilding a faulty CRI2-18 injector is often a more cost-effective intervention than complete fuel system replacement. Bench testing before installation is the definitive method for confirming injector health, with flow deviations exceeding ±2% indicating the need for overhaul or replacement .

 

 

Q1: Is the 0445110856 injector compatible with the Nissan ZD30DDTi engine?
A: Yes. This injector is specified for Nissan ZD30DDTi engines found in Cabstar and NT400 models, with OEM cross-references including 16600-LC30A/B/C and 0445110433 variants .

Q2: What is the difference between new OEM and remanufactured versions of this injector?
A: New OEM units are factory-fresh Bosch components. Remanufactured units are fully disassembled, cleaned, and rebuilt with new seals, springs, and bench-tested to OEM flow specifications. Both are viable options when sourced from reputable suppliers .

Q3: Does this injector require coding to the vehicle's ECU after installation?
A: Some applications require entering injector trim codes (IMA) using diagnostic equipment. Consult the vehicle's service manual; not all CRI2-18 installations demand coding, but it is essential for certain platforms .

Q4: What sealing components should be replaced during installation?
A: Always replace the high-pressure seal ring, support ring, copper washer, and O-rings. Reusing seals risks leakage and pressure loss. Some suppliers include these components with the injector .

Q5: What is the typical service life of this injector under normal operation?
A: With quality fuel and regular filter changes, these injectors commonly exceed 150,000–200,000 kilometres. Fuel contamination and water ingress significantly reduce service intervals .

 

 

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