Diesel Engine Common Rail Fuel Injector 267-9717 for C9 330d 340d 336D Excavator

This high-pressure electro-hydraulic single nozzle assembly (standard part number: 267-9717 / 2679717, common OE cross-reference and interchangeable identification numbers include 10R-7222, 10R7222, 222-5961, 2225961, 249-0708, etc.) is specially manufactured for heavy engineering construction machinery, large-tonnage operating facilities and industrial diesel power platforms (such as C7 series 7.2L inline six-cylinder diesel engines, often equipped in 324D, 325D, 329D crawler excavators, 950H, 962H wheel loaders and 140K graders and other large equipment). As the core actuator of the HEUI electro-hydraulic unit injection system, it bears the crucial responsibility of precisely metering and rapidly atomizing high-pressure diesel fuel into ultra-fine particles within microseconds, ensuring thorough mixing of fuel and intake airflow for efficient and complete combustion and powerful power release.

The product adheres to the manufacturing standards of "high-pressure resistance, fine particle atomization, and millisecond-fast response." The internal needle valve assembly and armature control valve core are made from selected aerospace-grade quenched special alloy steel, combined with ultra-high precision geometric grinding and low-friction polishing. The surface is covered with a high-density, anti-coking hardened coating, effectively preventing early erosion caused by diesel impurities. After replacement and installation, equipment operators and on-site maintenance personnel will experience a significant performance improvement: crisp and rapid start-up, with the severe vibration at low-speed idling subsiding and becoming smooth; under heavy-load tunneling, steep slope climbing, or high-intensity continuous operation conditions, the control handle and pedal feedback are firm and smooth, acceleration is rapid and powerful, while significantly reducing exhaust black smoke, resulting in a satisfactory overall fuel consumption control experience.

• Advantages: Precision manufacturing throughout the entire process at our self-operated modern production base.

  Problems Solved: Traditional OEM and multi-level procurement models involve complex processes that easily lead to excessive tolerances in parts, uneven fuel supply to cylinders, and high-pressure leaks, while significantly increasing procurement costs.

  Value Brought: Relying on our self-built standardized production plant for precision manufacturing throughout the entire process eliminates layers of intermediaries, ensuring consistent injection height across all cylinders. This reduces maintenance costs and provides a solid and reliable power guarantee for long-term equipment operation.

• Advantages: 100% fully simulated digital dynamic bench for rigorous quality inspection.

  Problems Solved: Addresses common issues with inferior parts, such as injection atomization deviation, incomplete combustion due to sluggish solenoid valve response, engine misfires, idling vibrations, and wasted time and additional costs associated with secondary disassembly and adjustment.

  Value Brought: Each nozzle unit undergoes fully automated digital testing before leaving the factory. Under simulated high-temperature and ultra-high-pressure conditions, the injection volume and return oil sealing performance across different pressure ranges are precisely calibrated, ensuring immediate usability upon installation and significantly reducing time and costs associated with equipment disassembly, assembly, and debugging.

• Advantages: Sustained large-scale inventory and rapid shipping response.

  Problems Solved: For operational machinery and commercial vehicles, which are high-upload productivity tools, breakdowns due to fuel system malfunctions can lead to costly delays, compensation claims, and lost work time.

  Value Brought: The warehousing center maintains ample stock of best-selling specifications year-round. Orders are responded to quickly, with priority packing and shipping within 24-48 hours, significantly shortening logistics and delivery cycles. This helps fleets and owners quickly restore equipment availability and effectively avoids downtime losses.

• Advantages: Special quenched alloy and anti-corrosion hardened coating.

  Problems Solved: Addressing the issue of premature wear and valve core seizing caused by differences in diesel lubricity and sulfur content in different regions.

  Value Brought: The core valve assembly is made of high-strength special bearing steel and undergoes a surface anti-corrosion hardening treatment, significantly improving fatigue resistance and wear resistance. It maintains stable performance even under harsh environments and prolonged high-load operation, avoiding the additional costs associated with frequent disassembly and repairs.

Mining and Heavy Excavation Operations: Large tracked excavators continuously excavate and load large rocks in harsh, high-dust, and high-load environments, requiring extremely high stability in fuel supply and explosive power. When operators notice a decrease in digging force, severe idling vibration, or black smoke from the exhaust pipe, maintenance personnel promptly replace the fuel injector with this high-precision model. After replacement, fuel injection atomization is extremely uniform, and the hydraulic system's power output is restored to ample and stable levels, ensuring efficient progress in mining operations.

Continuous Working Conditions in Road Infrastructure and Gradement: Graders and bulldozers require engines to maintain stable low-speed, high-torque output for extended periods during road infrastructure operations. When equipment experiences starting difficulties, sluggish acceleration, or abnormally high fuel consumption, the maintenance team will replace the entire fuel supply system. Precise electronic injection control restores smooth engine operation, significantly improving fuel efficiency and acceleration response, avoiding downtime costs.

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

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

2. Q: What is the inventory and delivery time for bulk purchases?

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

3. 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.

4. 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 when using our products.