Heavy Duty Engines High Precision A6640170121 Common Rail Diesel Fuel Injector for Ssangyong Actyon 2.0 Xd D20dt

The fuel atomization and injection timing are controlled through precision valve assemblies to optimize the combustion process, enhance the engine's power output, fuel economy and emission performance, reduce the formation of carbon deposits, and extend the engine's lifespan. It can withstand the high-pressure fuel system of diesel engines (such as common rail systems), ensuring stable operation under high-temperature and high-load conditions, and is compatible with heavy-duty engines such as For Ssangyong Actyon 2.0 XD D20DT (related user scenarios). It is applicable to diesel engine systems of heavy construction machinery (excavators, loaders), commercial vehicles (trucks, buses), generator sets, Marine power, etc. It is especially suitable for the maintenance and upgrade of For Ssangyong Actyon 2.0 XD D20DT series engines, and is compatible with original factory components, simplifying installation and maintenance.

Our company offers variety of products which can meet your multifarious demandsWe adhere to the management principles of "quality frst, customer frst andcredit-based" since the establishment of the company and always do our best tosatisfy potential needs of our customers. Our company is sincerely willing to cooperatewith enterprises from all over the world in order to realize a win-win situation since thetrend of economic globalization has developed with anirresistible force.

This high-precision common-rail diesel fuel injector assembly (Part ID: A6640170121 / A 664 017 01 21; common OE cross-references include 6640170121, EJBR04501D, EJBR04501D-R, etc.) is precision-engineered. Designed for the D20DT / D20DTR 2.0L XDi diesel engine platform, it is widely used in SUV and pickup models such as the Kyron 2.0 XDi, Actyon 2.0 XDi, Korando 2.0 XDi, and Actyon Sports 2.0 XDi. As a core component of the fuel delivery system responsible for controlling diesel atomization quality and pulse injection timing, it precisely meters high-pressure diesel and rapidly disperses it into ultra-fine particles in response to millisecond-level electrical signals, facilitating thorough mixing with intake air for optimal combustion.

The component is manufactured to standards emphasizing "micro-level precision fit" and "millisecond-level rapid response." The core control valve core and needle valve assembly are crafted from aerospace-grade, hardened special alloy steel, featuring ultra-high-precision geometric grinding and low-friction polishing. The surface is finished with a dense, ultra-hard coating that effectively prevents internal scratching and pressure loss caused by diesel impurities. Upon installation, drivers and mechanics will notice immediate improvements: crisp, clean cold starts and quiet, vibration-free idling. Whether climbing steep slopes, navigating stop-and-go traffic, or cruising long distances, the throttle response is sharp and sensitive, and acceleration is robust yet smooth. Additionally, black smoke emissions are reduced, resulting in satisfactory fuel efficiency and a stable, refined driving experience.

Standardized intelligent manufacturing and quality control directly from the source factory. Cost-Effective Sourcing by Eliminating Intermediaries: We effectively reduce procurement costs by bypassing middlemen—a common source of issues such as out-of-tolerance fitment, uneven fuel delivery across cylinders, and high-pressure leakage risks. Leveraging standardized production bases, we implement end-to-end quality control and eliminate unnecessary markups. This ensures highly consistent fuel injection pressure and flow rates across all cylinders, providing reliable power for vehicle and equipment operations while simultaneously cutting maintenance budgets.

Rigorous Testing on Ultra-High-Pressure Digital Dynamic Test Benches: We address common problems associated with low-quality replacements—such as response lag, pressure-relief valve sticking (causing engine misfires and vibration), and the wasted time and money spent on repeated installation and adjustment. Every injection assembly undergoes automated testing before leaving the factory; flow rates and sealing integrity are precisely calibrated across various pressure ranges in environments simulating real-world high-temperature, ultra-high-pressure conditions. This ensures "ready-to-install" performance, drastically saving time and costs associated with installation and tuning.

Large-Scale Warehousing and Rapid Shipping: Recognizing that commuter and commercial transport vehicles are high-utilization assets, we aim to prevent the costly losses incurred when fuel system failures cause vehicle downtime. Our warehouse maintains ample stock year-round; orders are packed and shipped within 24–48 hours of confirmation. This significantly shortens logistics wait times, helping fleets and owners quickly get vehicles back on the road and avoid losses due to downtime.

Special Quenched Alloy Needle Valves with Wear-Resistant Hardened Coatings: We tackle issues where poor diesel lubricity or high sulfur content leads to premature wear and valve sticking in precision components. Our core components utilize high-hardness special bearing steel and anti-corrosion surface treatments, offering superior fatigue and wear resistance. They maintain stable performance even under harsh conditions and prolonged high-load operation, thereby reducing the extra expenses associated with frequent repairs and replacements.

Application Scenarios

Diesel pickup trucks used in outdoor engineering and dual-purpose (passenger/cargo) operations: These vehicles frequently operate at outdoor construction sites, on farms, and across complex terrain, facing frequent heavy loads and steep inclines. Maintenance personnel should replace the injector with this electronically controlled common rail model if the vehicle exhibits sluggish acceleration, shuddering during acceleration, or a significant increase in fuel consumption. Post-installation, the high-pressure injection is precise and smooth, providing responsive power delivery and easily handling various heavy-duty and complex outdoor tasks. Diesel SUV Scenario (City Commuting & Long-Distance Holiday Road Trips): Diesel SUVs handle both daily family commutes and long-distance off-road trips; owners expect exceptional quietness and driving smoothness. When issues such as prolonged cold starts, severe idling vibration, or increased black exhaust smoke arise, the maintenance team installs a complete set of high-precision fuel injection components. Precise fuel atomization restores the engine's smooth and quiet operation, ensuring a comfortable, worry-free journey.

Q: Can the product be used immediately after installation, or is a correction code required?

A: Each fuel injector is assigned a unique flow correction code (C2I/QR code) during factory testing. We recommend using a diagnostic tool to program this code into the engine control unit (ECU) after installation to achieve optimal fuel efficiency and smooth operation.

Q: What are the stock levels and shipping times for bulk orders?

A: We operate our own factory and large-scale warehouses, maintaining substantial year-round inventory for this model. Standard orders are packed and shipped within 24–48 hours, while large-volume orders can be quickly scheduled for production.

Q: How are product quality and performance ensured before shipment?

A: All fuel injectors undergo assembly in a Class 100 cleanroom environment and 100% bench testing across all operating conditions. Tests cover critical metrics such as sealing integrity, pilot injection volume, full-load injection volume, and fuel return volume; our rigorous standards ensure that every unit shipped is a premium product.

Q: What is the warranty period, and how is after-sales support handled?

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