Product Specifications:
Engineered to withstand the punishing environments of heavy-duty construction and continuous industrial operations, the 0445120070 is an industrial-grade aftermarket Common Rail Diesel Fuel Injector. Specifically calibrated for the formidable Cummins ISB and QSB (6.7L) 6-cylinder powerplants, this precision component instantly restores factory-level fuel atomization. Replacing a worn or malfunctioning unit with this premium injector resolves frustrating hard starts, eliminates excessive black smoke under extreme digging loads, and safely recovers the maximum hydraulic breakout torque required for severe earthmoving tasks. Designed as a direct mechanical drop-in, it guarantees true plug-and-play installation requiring absolutely zero complex ECU coding, ensuring your vital heavy machinery gets back to the job site without expensive dealership diagnostic delays.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Cummins) |
| 0445120070 | 4930485 / 4 930 485 |
| 0445120241 | 3976631 / 3 976 631 / 5263304 |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Cummins | Various Heavy Machinery & Trucks | 6.7 d | Various | ISB / QSB (6-Cyl) |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Leaving a single degraded injector in a hard-working QSB/ISB block causes severe rail pressure drops. This directly results in violent engine stalling under heavy load, rapid DPF soot clogging, and a highly dangerous loss of operational lifting power when handling heavy materials.
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The Fix: We highly recommend leveraging our Volume Discounts to install a completely synchronized set of 6 units. This guarantees perfectly balanced cylinder combustion, returning your industrial equipment to a steady, powerful idle and recovering its maximum factory working capacity.
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✅ Direct Replacement (No Coding Required):
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Rigorously flow-tested on advanced DCI calibration benches, this unit delivers true plug-and-play functionality. It requires zero IMA programming, bypassing expensive electronic diagnostic tools and slashing your field mechanic’s repair downtime.
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⚠️ Critical Cleaning Step:
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Industrial and construction site fuel tanks are highly prone to dust and water contamination. You absolutely must thoroughly flush the entire high-pressure fuel rail and lines before installation. Always equip a brand-new 5-micron fuel filter to protect the precision internal nozzle from instant destruction.
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🔍 Explore More Heavy Duty Parts:
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Looking for more options? Browse our complete selection of Fuel Injectors & Pumps.
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Keep your fleet running smoothly with our premium Engine Components.
⚖️ Legal Disclaimer
Part numbers, OE numbers, and brand names mentioned above are for reference and identification purposes only. This product is a compatible aftermarket replacement part and is NOT manufactured, sponsored, or affiliated with the original equipment manufacturers.
