Product Specifications:
Engineered to thrive in the punishing, high-dust environments of severe earthmoving and excavation sites, the 0445120080 is a heavy-duty aftermarket Common Rail Diesel Fuel Injector. Precisely calibrated for the robust Doosan 5.9L DL06S 6-cylinder engines, this industrial-grade component seamlessly restores factory-level fuel atomization for maximum hydraulic efficiency.
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Recovers Maximum Digging Force: Cures frustrating hydraulic bog-down (憋车) and restores the crucial breakout torque required for heavy trenching and lifting operations.
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Eliminates Thick Black Smoke: Instantly resolves erratic idling and excessive unburnt fuel, protecting your heavy machinery’s exhaust components from rapid soot accumulation.
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True Plug & Play Installation: Built as a direct mechanical replacement, it requires absolutely zero complex ECU coding, minimizing expensive downtime on the job site.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Doosan) |
| 0445120080 | 65.10401-7004 / 65104017004A |
| – | 107755-0280 / 1077550280 |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Doosan | Various Excavators & Wheel Loaders | 5.9 d | 2005-Up | DL06S (6-Cyl) |
👨🔧 Tech Notes & Installation Guide
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💰 Why is replacing the full set highly recommended?
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The Risk: Leaving a degraded injector in a hard-working 6-cylinder DL06S block creates severe rail pressure drops. This directly causes violent engine stalling under heavy hydraulic loads, accelerated component wear, and a critical loss of operational trenching power.
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The Fix: We strongly advise leveraging our Volume Discounts to install a completely synchronized set of 6 units. This guarantees perfectly balanced cylinder firing, returning your excavator to a smooth, powerful idle and recovering its maximum factory working capacity.
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✅ Do I need to program this injector after installation?
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No. Direct Replacement: Rigorously flow-tested on advanced DCI calibration benches, this unit delivers true plug-and-play functionality. It requires zero IMA programming, bypassing expensive diagnostic tools and slashing your field mechanic’s repair downtime.
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⚠️ What are the critical pre-installation cleaning steps?
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Mandatory System Flush: Construction site fuel tanks are highly prone to dust, mud, and water contamination. Failure to thoroughly flush the entire high-pressure fuel rail and install a brand-new OE-quality 5-micron fuel filter will cause instant contamination damage and 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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⚖️ 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.
