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320-0677 10r-767 12645A746 Diesel Fuel Injector for Cater-pillar C6.6 Engine E320d E323D420e
| MOQ: | 1 pieces |
| Price: | US $62.32-68.32 / p |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 320-0677 |
| Type | Fuel Injector |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This high-pressure electronically controlled common rail fuel injection valve assembly (standard part number: 320-0677, common cross-reference and OE interchangeable part numbers include 3200677, 10R-7672, 10R7672, 2645A746, 320-0670, etc.) is precision-manufactured for medium-sized construction machinery, industrial-grade work equipment, and diesel-powered platforms (such as the C4.4 series 4.4L diesel engine, widely configured in 312D, 315D, 318D tracked excavators, 416E, 420E wheeled backhoe loaders, and 914G wheeled loaders). As a key metering and spray actuator in the electronically controlled high-pressure common rail fuel supply system, it can accurately meter high-pressure diesel fuel and rapidly disperse it into nano-sized micro-atomized particles within a microsecond reaction time, achieving complete mixing and full combustion of fuel and intake airflow.
The product adheres to the industrial design principles of "microscopic ultra-fine atomization and millisecond-level ultra-fast response." The internal needle valve assembly and armature control valve core are made from carefully selected quenched special alloy steel, combined with ultra-high precision geometric grinding and low-friction polishing processes. The surface is covered with a dense, 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 very clear performance improvement: ignition starts crisply and quickly, and the severe vibration at low-speed idling completely disappears; when facing heavy-duty excavation, high-load bulldozing, or steep slope climbing conditions, the control lever and throttle are tightly and smoothly controlled, providing continuous, abundant, and stable power, while significantly reducing black smoke emissions and delivering excellent overall fuel economy control.
Advantages: Integrated intelligent manufacturing in a self-operated automated factory.
Problems Solved: Addresses issues such as dimensional discrepancies in component fit, uneven fuel supply to cylinders, and high-pressure leakage risks that are easily caused by traditional multi-layered OEM manufacturing and resale trade, while also avoiding the increased procurement costs due to intermediaries.
Value Gained: Utilizing a self-built standardized production base for end-to-end precision manufacturing eliminates layers of intermediaries, ensuring consistent injection height across cylinders. This reduces maintenance costs and provides a robust and reliable power guarantee for long-term equipment operation.
Advantages: 100% fully simulated digital bench rigorous quality inspection.
Problems Solved: Addresses quality issues such as delayed solenoid valve response, internal pressure leakage, and needle valve jamming that are common with low-quality parts, leading to unstable power output after installation and wasted time and money on repeated disassembly and debugging.
Value Gained: Each injector undergoes fully automated testing before leaving the factory. Under fully 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 after installation and significantly saving time and costs associated with equipment disassembly and debugging.
Advantages: Sustained, massive inventory and rapid warehousing and distribution.
Problems Solved: Addressing the costly delays and lost work time caused by fuel system malfunctions affecting commercial vehicles and construction machinery, resulting in downtime and material shortages.
Value Brought: The warehousing center maintains ample stock of best-selling specifications year-round. Orders are responded to quickly, with priority packing and dispatch 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 hardened alloy wear-resistant and corrosion-resistant material.
Problems Solved: Addressing the issue of premature wear and valve core seizure caused by differences in diesel lubricity and sulfur content in different regions.
Value Brought: Core valve components utilize high-strength special bearing steel and surface anti-corrosion hardening treatment, significantly improving fatigue resistance and wear resistance. Even under harsh environments and prolonged high-load operation, stable performance is maintained, avoiding the additional costs of frequent disassembly and repairs.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | Electronically Controlled High-Pressure Common Rail Diesel Injector Assembly |
| Standard OE Part Number | 320-0677 |
| Interchangeable Part Number | 3200677 / 10R-7672 / 10R7672 / 2645A746 / 320-0670 |
| Applicable Engine Platform | C4.4 Series 4.4L Diesel Engine |
| Fuel Supply System | High-Pressure Electronically Controlled Common Rail System |
| Core Needle Valve Material | Aerospace-grade hardened bearing steel, corrosion-resistant high-hardness special alloy steel |
| Needle Valve Surface Treatment | High-density, ultra-wear-resistant DLC hardened coating |
| Nozzle Machining Technology | EDM high-precision electrical discharge micro-hole machining |
| Maximum Working Pressure | ≥ 1800 bar |
| Operating Temperature Range | -40°C to +125°C |
| Internal Sealing Components | Original factory-grade high-temperature resistant and swelling-resistant special fluororubber (FKM O-Rings) |
| Net Weight per Unit | Approx. 0.88 kg / piece |
| Factory Testing Standards | 100% automated full-condition bench flow and sealing tests |
Open-pit mining and large tracked excavator operations: Excavators and mining loading equipment continuously excavate and load large rocks in harsh, high-dust, and high-intensity environments, placing extremely high demands on engine fuel supply stability and power output. When on-site operators notice a decrease in equipment digging force, significant and severe shaking at idle, or frequent black smoke from the exhaust pipe, maintenance personnel promptly replace worn parts and install this high-precision fuel injector. After replacement, fuel injection atomization is extremely uniform, and the hydraulic system power output is restored to ample and stable levels, ensuring efficient and uninterrupted mining operations.
Large-scale road construction and continuous operation scenarios for graders and excavators: When graders and backhoe loaders are engaged in highway infrastructure work, their engines need to maintain a stable low-speed, high-torque output for extended periods. When equipment experiences starting difficulties, sluggish acceleration, or abnormally high fuel consumption, the engineering 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 additional labor costs caused by construction downtime.
Q: Can I use the product directly after installation? Is it necessary to enter a correction code?
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.
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.
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: What is the warranty period for your products? What are your after-sales service details?
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.
