0445120213 Common Rail Injector 0 445 120 213 Fuel Injection Diesel Oil Inyector 612600080611 for Weichai

This model of diesel engine high-pressure common rail injector assembly (part identification number: 0445120213 / 0 445 120 213; common cross-reference and OE interchangeable identification numbers include 0445120059, 0445120123, 0986435558, 5263308, 3976372, etc., mainly matched with ISDe 4.5L / 6.7L and QSB 6.7L series inline four-cylinder / six-cylinder medium and heavy-duty diesel power platforms, widely installed in highway medium trucks, intercity buses, engineering mixer trucks, and excavators, etc.) is meticulously manufactured. As the core actuator in the electronically controlled high-pressure common rail fuel supply system, it is responsible for accurately metering and rapidly dispersing high-pressure diesel fuel into ultra-fine particles under microsecond-level electrical signal control, promoting full mixing and combustion of fuel and intake airflow.

The product's manufacturing process adheres to the design standards of "microscopic micron-level fit and high-pressure stable injection." The internal control valve core and needle valve assembly are made of aerospace-grade hardened bearing steel, combined with precision geometric grinding and a high-density, ultra-wear-resistant coating, effectively resisting erosion and pressure relief caused by diesel impurities. After the parts are replaced and installed, mechanics and drivers will experience a very clear performance improvement: cold start is clean and crisp, and the severe vibration at low idle speeds is significantly reduced; under heavy-load uphill driving, high-speed overtaking, or high-load continuous operation conditions, the accelerator pedal response is firm and sensitive, acceleration is smooth and powerful, while black smoke emissions are significantly reduced, resulting in satisfactory fuel control and a smooth driving experience.

• Intelligent manufacturing at the source and standardized precision production. Effectively reducing procurement costs by addressing the risks of accumulated tolerances in parts assembly, uneven fuel supply to cylinders, and high-pressure leakage caused by multi-level distribution chains. By leveraging standardized processes at our production base and eliminating unnecessary intermediary markups, we ensure a high degree of consistency in fuel injection quantity and timing across all cylinders. This controls maintenance costs while providing stable and reliable power support for vehicle operation.
• We conduct rigorous quality inspections on an ultra-high-pressure digital dynamic test bench under all operating conditions. This addresses common issues with inferior replacement parts, such as slow response times, internal pressure leaks causing engine misfiring and vibration, and wasted labor costs due to repeated disassembly and adjustment. Each component undergoes high-pressure dynamic simulation on an automated testing bench before leaving the factory, finely adjusting fuel injection quantity and sealing parameters across different pressure ranges to ensure immediate usability and significantly reduce time costs associated with equipment disassembly and adjustment.
• Large-scale warehousing ensures readily available stock for rapid delivery. For commercial transport vehicles and construction machinery, which are high-upload productivity tools, fuel system failures can lead to costly delays and losses. Our warehousing center maintains ample stock, quickly processing orders and packing and shipping them within 24-48 hours after order confirmation. This significantly shortens logistics waiting times, helping fleets quickly resume operations and avoid downtime losses.
• Specially quenched alloy needle valve with hardened coating protection. Addressing the issue of poor diesel lubrication and sulfur impurities in certain areas leading to premature wear and seizure of components, the core components are made of high-hardness special bearing steel with a surface anti-corrosion treatment, significantly enhancing fatigue resistance and wear resistance. Even under harsh environments and prolonged high-load operation, it maintains stable voltage output, reducing the additional costs associated with frequent disassembly and repair.

Intercity Medium and Heavy-Duty Truck Freight and Trunk Logistics Scenarios: Medium-duty trucks and transport vehicles frequently travel on intercity trunk lines, with vehicles operating at full load for extended periods and continuously climbing hills. When drivers notice difficulty accelerating, insufficient power in high gears, or a significant increase in fuel consumption, maintenance personnel promptly replace the entire set of high-precision common rail injectors. After the upgrade, fuel injection establishes quickly and stably, providing smooth and powerful acceleration under heavy loads, ensuring timely and efficient completion of freight tasks.

Construction Site and Medium-Sized Excavator Operation Conditions: Medium-sized excavators and loading equipment operate in earthmoving sites, facing high dust levels and high operational pressure. When equipment experiences slow starting, severe idling vibration, or stalling under high load, the maintenance team replaces the fuel injection components with this electronically controlled fuel injection system. Precise fuel atomization allows the engine to instantly release high torque at low speeds, smoothly handling frequent start-stop cycles and heavy loads, ensuring project progress.

Q: Can I use the product directly after installation? Is a correction code required?

A: Each injector has a unique flow correction code (IMA/QR code) generated during factory testing. It is recommended to use a diagnostic tool to flash the correction code into the engine control unit (ECU) after installation to achieve optimal fuel efficiency and smoothness.

Q: What are the inventory and delivery times for bulk purchases?

A: We have our own factory and large warehouse, maintaining a large inventory of this model year-round. Standard orders can be packaged and shipped within 24-48 hours, and large-volume orders can be quickly scheduled for production.

Q: How do you guarantee the quality and performance of your products before they leave the factory?

A: All injectors undergo assembly in a Class 100 cleanroom and 100% full-condition bench testing, covering key indicators such as sealing, pre-injection volume, full-load injection volume, and return oil volume. These stringent testing standards ensure that they are high-quality products from the outset.

Q: How long is the warranty period? What about after-sales service?

A: We offer a 12-month warranty period. If a performance failure occurs within the warranty period due to non-human factors, we provide rapid replacement or after-sales technical support to ensure your peace of mind.