Product Specifications:
Engineered specifically to conquer the massive hydraulic demands of heavy excavators and high-capacity wheel loaders, the 0445120236 is an ultra-durable aftermarket Common Rail Diesel Fuel Injector. Precision-machined for the formidable Cummins QSL 8.9 and Komatsu 6-cylinder industrial engines, this heavy-duty component instantly restores factory-level fuel delivery and immense breakout torque. Built with pre-calibrated flow data for exact ECU matching, it ensures an effortless drop-in installation, enabling your earthmoving fleet to bypass expensive dealer diagnostic waits and rapidly return to peak trenching and lifting capacity.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Cummins / Komatsu) |
| 0445120236 | 6745-12-3102 / 6745-12-3100 |
| 0445120125 / 0445120029 / 0986435554 | 4940170 / 5263308 / 3973060 |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Cummins | Industrial Machinery & Heavy Trucks | 8.9 d | Various | QSL 8.9 |
| Komatsu | Heavy Excavators & Wheel Loaders | 8.9 d | Various | SAA6D114E (Cummins QSL) |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Running a massive QSL 8.9 industrial engine with a compromised injector creates severe high-pressure rail fluctuations. This directly leads to violent hydraulic bog-down under heavy digging loads (严重憋车), extreme exhaust temperatures, and rapid DPF soot clogging that will inevitably trigger a catastrophic job-site breakdown.
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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 firing, returning your heavy equipment to a smooth, robust idle and safely recovering its maximum operational breakout force.
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✅ Direct Replacement (No Coding Required):
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Rigorously tested on advanced DCI calibration benches, this component is pre-calibrated to exact factory tolerances. It features auto-adaptive flow readiness, entirely bypassing complex IMA programming and drastically slashing your field mechanic’s repair downtime.
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⚠️ Critical Cleaning Step:
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Earthmoving site fuel tanks naturally ingest highly abrasive silica dust and water. You must thoroughly flush the entire high-pressure fuel system and install a brand-new OE-quality 5-micron fuel filter before ignition; failure to do so causes instant contamination scoring and will strictly void the 30-day manufacturing defect policy.
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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.
