Bosch 0445120267 Common Rail Injector – Designed For 6.7L Engines That Work Without Pause

 

The Bosch 0445120267 (0 445 120 267) is a high-performance Common Rail Injector (CRI) engineered specifically for 6.7L engines that operate under continuous, demanding conditions. Designed as a direct replacement for Cummins ISB/ISDe series powerplants found in Ford Cargo trucks, municipal vehicles, and various heavy-duty chassis, this injector restores precise fuel metering, optimizes combustion efficiency, and ensures reliable operation across the entire RPM range. With advanced solenoid-actuated control and multi-hole nozzle technology, the Bosch 0445120267 addresses the critical needs of workshops and fleet operators seeking to eliminate performance issues such as hard starting, excessive smoke, and cylinder imbalance.

 

The Bosch 0445120267 operates as a high-pressure solenoid-actuated injector within the CRIN3-18 platform, designed to withstand rail pressures exceeding 25,000 PSI common in modern 6.7L diesel systems . This unit utilizes a DLLA143P2248 multi-hole nozzle, which generates a finely atomized spray pattern essential for complete combustion and reduced soot emissions . The injector's internal control valve (F00RJ01714) manages fuel return flow and ensures rapid response to ECU commands, enabling multiple injection events-pilot, main, and post-to minimize combustion noise and lower DPF loading . Critical OEM cross-reference numbers for this injector include Cummins 5269194 (and variants 5269194I/PX/RX), Hino 89550E0072, alongside the Bosch base reference 0445120267RX . Each new unit is manufactured to OE flow specifications, eliminating the variance often found in reconditioned parts and guaranteeing that the ECU recognizes and controls the injector without calibration faults.

 

This injector is predominantly utilized across a broad spectrum of medium-duty and commercial applications powered by the 6.7L displacement. Primary compatibility includes the Cummins ISB 6.7 and ISDe 6.7 engine families, which are widely installed in Ford Cargo trucks (2012-2019 models, including Cargo 1723 through 3131 series) . Beyond Ford, the 0445120267 is essential for Hino chassis, various Tata and TEMSA buses, and specialized equipment from manufacturers like Komatsu, Hitachi, and Hyundai that utilize Cummins-based power units . This injector is also suitable for QSB6.7 and ISC 8.3 Common Rail adaptations, making it a versatile stock-keeping unit for independent repair shops and diesel parts wholesalers serving the municipal delivery, construction, and agricultural sectors . It is crucial to verify the engine code and the existing injector part number, as this solenoid-actuated variant differs significantly from piezo-actuated injectors used in later Ram pickup models .

 

Successful installation of the Bosch 0445120267 demands strict adherence to Bosch technical specifications to prevent premature failure. Prior to fitting, the injector bore in the cylinder head must be meticulously cleaned using compressed air and specialized brushes to remove carbon deposits and debris that could compromise the new seal . The copper gasket or steel sealing washer and the O-ring must always be replaced with new components, as reusing old seals leads to high-pressure fuel leakage and loss of cylinder compression . During installation, torque application is critical: the high-pressure fuel line nut must be tightened to 25 Nm ± 3 Nm, and any retaining clamp bolts must be tensioned in a stepped sequence to avoid distortion . Post-installation validation must include checking the fuel return flow rate (typically ≤ 35 ml/min at idle) and performing a leak test to ensure the system is air-free and the injector is operating within its design envelope .

 

 

Parameter / Cross-Reference	Specification / Value
Bosch Part Number	0445120267 / 0 445 120 267
Injector Type	Common Rail Solenoid (CRIN3)
Primary Engine Fitment	Cummins ISB / ISDe 6.7L
OE Cross Reference (Cummins)	5269194, 5269194I, 5269194PX
OE Cross Reference (Hino)	89550E0072
Nozzle Specification	DLLA143P2248
Control Valve	F00RJ01714
Typical Rail Pressure	>25,000 PSI
Vehicle Applications	Ford Cargo (2012-2019), Hino, Tata, TEMSA

 

Q1: Can I install the Bosch 0445120267 without updating ECU calibration codes?
A: While the injector meets OE flow specifications, some Cummins ISB ECUs require trim coding to synchronize the injector's individual flow characteristics with the engine control unit. Always check the OEM service manual; failure to code may result in cylinder imbalance or a check engine light .

Q2: What is the primary failure mode this injector addresses in the 6.7L Cummins?
A: The 0445120267 directly resolves issues caused by nozzle erosion and worn internal springs, which manifest as hard starting, white smoke at idle, and a distinct engine knock due to delayed injection timing and over-fueling .

Q3: How does this Bosch unit differ from injectors used in the 2019+ Ram 6.7L Cummins?
A: This 0445120267 is a solenoid-actuated injector commonly found in medium-duty commercial vehicles. It is not compatible with later model Ram pickups that utilize piezo-actuated injectors (e.g., 0445120357 or 0986435621). Always verify the OE number on the old unit .

Q4: What are the critical torque specifications for installing the high-pressure fuel line?
A: The connection nut for the high-pressure line must be tightened to 25 Nm ± 3 Nm. Over-tightening can deform the sealing cone, causing leaks, while under-tightening will result in immediate high-pressure fuel seepage .

Q5: Why is it recommended to replace all injectors at once rather than just a single unit?
A: Mismatched injectors due to uneven wear disrupt the ECU's ability to balance fuel delivery across cylinders. Replacing as a full set ensures uniform performance, restores original horsepower, and prevents the newly installed injector from failing due to the compensation required by older units .

 

 

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