Product Specifications:
Engineered for the continuous heavy hauling and demanding workloads of regional transport and commercial passenger transit, the 0445120290 is a highly resilient aftermarket Common Rail Diesel Fuel Injector. Specifically calibrated to match the strict fuel requirements of Yuchai commercial diesel engines, this heavy-duty core rapidly restores optimal fuel atomization and flawless rail pressure stability. Equipped with pre-calibrated flow characteristics for perfect ECU synchronization, this unit offers a genuine plug-and-play installation, ensuring your freight trucks and buses bypass costly diagnostic routines and instantly return to peak operational efficiency and fuel economy.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Yuchai) |
| 0445120290 | L4700-1112100-A38 / L4700-1112100A-A38 |
| 0445120156 | L4700-1112100-A38 |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Yuchai | Commercial Trucks & Buses | Various | Various | Heavy Duty Diesel (YC4 / YC6 Series) |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Operating a hard-working Yuchai commercial engine with a faulty injector causes severe rail pressure drops. This directly results in violent cabin vibrations under heavy cargo loads, terrible fuel economy, and accelerated DPF soot clogging that will inevitably trigger a dangerous highway limp mode.
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The Fix: We highly recommend utilizing our Volume Discounts to purchase a fully synchronized set of 4 or 6 units (depending on your engine block). This ensures perfectly balanced cylinder combustion, returning your commercial vehicle to a smooth, robust idle and safely recovering its maximum towing capacity.
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✅ Direct Replacement (No Coding Required):
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Pre-calibrated to exact factory tolerances on advanced DCI test benches, this precision component delivers true plug-and-play functionality. It requires absolutely no complex IMA coding, completely bypassing expensive dealership software and drastically slashing your mechanic’s repair downtime.
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⚠️ Critical Cleaning Step:
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Commercial fleet fuel tanks naturally accumulate abrasive sludge over thousands of miles. You must thoroughly flush the entire high-pressure fuel system and install a brand-new OE-quality 5-micron fuel filter before startup; failure to do so causes immediate debris damage 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.
