Common-Rail Fuel Injector 0445120231 for Cummins QSB & Komatsu Engines
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Cummins QSB4.5, QSB5.9 and QSB6.7 applications when the injector number matches
- select Komatsu engines and PC200-8 configurations subject to engine serial verification
Product Overview
A failing injector can cause rough running, excessive smoke, hard starting or a cylinder-specific fault. Because rail-pressure problems and wiring faults can mimic injector failure, diagnosis should confirm the affected injector before it is replaced.
Key Features & Performance
- Single injector
- Bosch-style common-rail design
- documented cross-references 5263262 and Komatsu 6754-11-3011
Replaces / Cross-References
- 0445120231
- 5263262
- 6754-11-3011
Common Reasons for Replacement
Cylinder misfire, smoke, hard starting, poor fuel atomization or injector leakage.
Fitment Notes
Check the actual injector tag, rail system, engine serial and ECU calibration; installation or coding procedures can vary.
Frequently Asked Questions
Is this an OEM part? No. This listing is for an aftermarket replacement or upgrade component unless explicitly identified as genuine OEM. Brand names and original-equipment numbers identify applications, not manufacturer affiliation.
How do I confirm fitment? Check the actual injector tag, rail system, engine serial and ECU calibration; installation or coding procedures can vary.
Part Summary
Keywords: Common-Rail Fuel Injector 0445120231, Common-Rail Fuel Injector 0445120231 for Cummins QSB & Komatsu Engines, 0445120231, 5263262, 6754-11-3011, Cummins QSB4.5, QSB5.9 and QSB6.7 applications when the injector number matches, select Komatsu engines and PC200-8 configurations subject to engine serial verification.
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.