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Bosch
0445120177 Bosch CRIN Fuel Injector for Cummins QSB & ISB 6.7L Diesel Engines
0445120177 Bosch CRIN Fuel Injector for Cummins QSB & ISB 6.7L Diesel Engines
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Genuine new Bosch 0445120177 CRIN3-18 electromagnetic common rail fuel injector for Cummins QSB4.5, QSB5.9, QSB6.7 and ISB6.7 diesel engines. The most widely used OE references for this injector are Cummins 5254261 and Komatsu 6755-11-3100; the full cross-reference list is in the table below.
The injector meters the fuel delivered to one cylinder from the common rail, opening and closing under ECU control at full rail pressure so that injection quantity and timing stay accurate across the whole load range. It is supplied new in the original sealed Bosch box, made in Brazil, together with a nozzle sealing washer and an injector O-ring, and is covered by a 1-year manufacturer warranty.
This injector is not IMA (IQA) coded, so there is no individual calibration code to write into the ECU after fitting.
Also known internationally as: Common Rail Injector (EN), Common-Rail-Injektor / Einspritzduse (DE), Injecteur Common Rail (FR), Iniettore Common Rail (IT), Inyector Common Rail (ES), Injector Common Rail (RO) - Bosch 0445120177 for Cummins QSB and ISB 6.7L.
Buying for a full 6-cylinder engine? See the Bosch 0445120177 injector set of 6 for Cummins QSB and ISB 6.7L.
Key Features
| Feature | Details |
|---|---|
| Product type | Bosch CRIN common rail electromagnetic fuel injector |
| Brand | Genuine Bosch |
| Injector family (type formula) | CRIN3-18 |
| Fuel system | Bosch common rail diesel injection system |
| Engine compatibility | Cummins QSB4.5, QSB5.9, QSB6.7 and ISB6.7 diesel engines |
| Application | Medium-duty trucks, buses, agricultural, construction, marine, industrial and power-generation diesel engines |
| Actuator type | Electromagnetic solenoid |
| Fuel type | Diesel |
| Coding | Not IMA (IQA) coded, no coding required after fitting |
| Fitment type | Direct OEM replacement when part numbers match |
| Quality standard | Bosch OEM manufacturer quality |
| Installation | Professional installation recommended |
Product Details
| Product detail | Information |
|---|---|
| Main Bosch part number | 0445120177, 0 445 120 177 |
| Bosch Exchange (remanufactured) equivalents | 0986435697, 0986435705 |
| Bosch injector family | CRIN3-18 |
| Product category | Common rail diesel fuel injector |
| Manufacturer | Bosch |
| Condition | New, in the original sealed Bosch box |
| Coding | Not IMA (IQA) coded |
| Made in | Brazil |
| EAN / GTIN | 4047024785007 |
| Included in the package | 1 injector, nozzle sealing washer, injector O-ring |
| Weight | 0.58 kg |
| Package dimensions | 25 x 10 x 10 cm |
| Customs tariff code (HS) | 84099900 |
| Installation area | Engine cylinder head |
Cross-Reference Numbers
Compare your original part number before ordering. The vehicle or machine model alone is not enough to confirm compatibility. Codes are shown both with and without separators so they can be matched in any format.
| Brand / manufacturer | Cross-reference numbers |
|---|---|
| Bosch (new) | 0445120177, 0 445 120 177 |
| Bosch Exchange (remanufactured) | 0986435697, 0 986 435 697, 0986435705, 0 986 435 705 |
| Cummins and Komatsu | 5254261, 5 254 261, 5254261NX, 5254261PX, 5254261QX, 5254261RX, 5579332NX, 5579332RX, 3060303, 3060479, 3060481, 2411300035, 241-130-0035, 2411301035, 241-130-1035, 2411306035, 241-130-6035, 6755113100, 6755-11-3100 |
Vehicle and Machine Compatibility
Compatibility must always be verified by the original Bosch part number, the OEM reference number, the VIN, the engine serial number, or the identification number marked on the injector already fitted.
Cummins engine applications
| Make | Engine | Displacement | Power | Year | Engine code |
|---|---|---|---|---|---|
| Cummins | QSB4.5 | 4.5 L | 60-125 kW | 09/2002 onwards | QSB4.5 |
| Cummins | QSB4.5 | 4.5 L | 89-127 kW | 09/2013 onwards | QSB4.5 |
| Cummins | QSB5.9 | 5.9 L | Not specified | 09/2001 onwards | QSB 5.9 |
| Cummins | QSB6.7 | 6.7 L | 98-202 kW | 09/2006 onwards | QSB6.7 |
| Cummins | QSB6.7 | 6.7 L | 103-221 kW | 09/2013 onwards | QSB6.7 |
Truck applications
| Make | Model | Displacement | Power | Year | Engine code |
|---|---|---|---|---|---|
| International (Navistar) | DuraStar 4300LP 6.7 | 6.7 L | Not specified | 09/2014 to 08/2019 | ISB |
| Peterbilt | 337 | 6.7 L | Not specified | 09/2013 to 08/2023 | PX-7.164 |
The same injector is fitted to further machines built around the Cummins QSB4.5, QSB5.9, QSB6.7 and ISB6.7 engines, including construction and industrial equipment supplied under Komatsu part numbers. Confirm fitment by the number marked on the injector actually fitted, not by the machine model.
Technical Information
| Technical specification | Information |
|---|---|
| Injector type | CRIN3-18 electromagnetic common rail fuel injector |
| Actuator technology | Electromagnetic solenoid |
| Fuel system type | Bosch common rail diesel injection system |
| Coding | Not IMA (IQA) coded, no injector coding needed |
| Installation type | Direct OEM replacement |
| Compatibility verification | Bosch number, OE number, VIN or engine serial number required |
Related Diesel Fuel System Parts
The following related diesel fuel system components may be used together with this application depending on engine configuration. This list is not exhaustive. Manufacturers fitted different variants depending on engine build, model, power rating, emission standard and production date, so another code may be the correct one for your engine. Identify the part by the number marked on the component actually fitted, not by the machine model.
| Product type | Product codes | Engine |
|---|---|---|
| Injector inlet connector (connector tube) | F00RC00647, F00RJ01831; Case: 84403334; Cummins: 4929864, 4 929 864, 5346206, 5 346 206; Komatsu: 4929864; Rambler (AMC): 68441874AA | QSB4.5, QSB5.9, QSB6.7 |
| High-pressure pump, common rail system | 0445020109, 0986437375, CR/CP3HS3/L110/30-789S; Cummins: 4989266; Komatsu: 4989266, 6754721012 | QSB4.5, QSB5.9, QSB6.7 |
| High-pressure pump, common rail system | 0445020176, CR/CP3HS3/L110/30-789S; Cummins: 5252703, 5262703; Komatsu: 5262703 | QSB4.5, QSB6.7 |
| High-pressure pump, common rail system | 0445020609, CR/CP4N2/L93/40-S; Cummins: 5302736, 5529762 | QSB4.5 (89-127 kW, 09/2013 onwards), QSB6.7 |
Compatibility Note
Please verify your original Bosch number, OEM reference number, VIN, engine serial number, or injector identification number before purchase. Do not install the part before checking compatibility. Installed or used fuel system parts may not be eligible for return.
Shipping and Warranty
| Shipping / warranty detail | Information |
|---|---|
| Shipping | Same-day handling for stock items |
| Pre-order availability | Pre-order items may require 2-4 weeks handling time |
| Warranty | 1-year manufacturer global warranty covering manufacturing defects |
| Returns | Returns accepted only for unused and uninstalled parts in original condition |
| Fitment responsibility | Buyer must verify compatibility before installation |
| Installation damage | Damage caused by incorrect installation, contaminated fuel, or incorrect application is not covered |
Frequently Asked Questions
| Question | Answer |
|---|---|
| What is included in the package? | One genuine new Bosch 0445120177 injector, a nozzle sealing washer and an injector O-ring, in the original sealed Bosch box. |
| Is this a genuine Bosch fuel injector? | Yes. It is a genuine new Bosch OEM common rail diesel fuel injector, supplied in the original Bosch box and made in Brazil. |
| What is the main part number? | The Bosch order number is 0445120177. The most common OE references are Cummins 5254261 and Komatsu 6755-11-3100. 0986435697 and 0986435705 are the Bosch Exchange (remanufactured) equivalents for the same application. |
| Which engines use Bosch 0445120177? | Cummins QSB4.5, QSB5.9, QSB6.7 and ISB6.7 diesel engines fitted to trucks, buses, agricultural machinery, construction equipment, marine and power-generation units. |
| Is this injector IMA coded? | No. This injector is not IMA (IQA) coded, so there is no calibration code to write into the ECU after fitting. |
| Is this new or remanufactured? | It is new, supplied in the original sealed Bosch box. |
| What type of injector is it? | An electromagnetic solenoid common rail fuel injector from the Bosch CRIN3-18 family. |
| Do I need a new sealing washer? | A nozzle sealing washer is supplied with the injector. Fitting the new washer is required; do not reuse the old one. |
| Do you ship worldwide? | Yes, we ship worldwide. |
Diagnostic Information
Common symptoms of a failing common rail injector
Extended cranking or a no-start condition, unstable idle, misfire on one cylinder, loss of power, rough running, excessive smoke, increased fuel consumption, an illuminated engine warning light, or excessive injector leak-off return volume.
The same symptoms can also be produced by the high-pressure pump, the rail pressure sensor, the fuel metering unit, the low-pressure supply, fuel contamination or engine management faults. A professional fuel-system test must be carried out before replacing any parts, to confirm the injector is the actual cause of the fault.
Installation and system check
Before replacing a common rail injector, carry out a professional diagnostic inspection: rail pressure test, injector leak-off (return flow) test, fuel contamination inspection, reading of the diagnostic trouble codes, fuel filter inspection and fuel quality check.
If the high-pressure pump has failed and released metallic particles into the fuel, the whole system must be checked and decontaminated, from the fuel tank through to the injectors: fuel tank, in-tank low-pressure pump, feed and return lines, filter and filter housing, high-pressure pump, common rail, rail pressure sensor, fuel metering unit and injectors. Any component that cannot be cleaned completely and safely, which usually means the in-tank pump, the rail pressure sensor, the metering unit and in most cases the injectors, must be replaced rather than cleaned. Fitting a new injector into a system that is still contaminated will cause a repeat failure.
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