Diesel Fuel Injector 3095773-20 3095773-28 3095773 4307427 3068859 3279720 for Cu-mmins K19 Kta19 K50 Kta50

This heavy-duty electronically controlled unit-style diesel fuel injector assembly (Part ID: 3095773; common OE cross-references include 3095773RX, 3411752, 3411752RX, 3087557, 3087557RX, 3087560, etc.) is precision-engineered for the ISM11/M11/QSM11/ISM series 10.8L inline-six diesel engine platform. It is widely used in long-haul semi-trucks, heavy-duty construction dump trucks, large excavators, and industrial generator sets. As a core actuator within the fuel system responsible for controlling diesel atomization quality and timing, it precisely meters high-pressure diesel and rapidly disperses it into ultra-fine droplets upon receiving commands from the Electronic Control Unit (ECU), thereby facilitating thorough mixing and combustion with the intake air inside the cylinder.

The component is designed and manufactured to standards emphasizing "micro-level precision fit" and "millisecond-level rapid response." The core control spool and needle valve assembly are crafted from selected 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, operators and technicians will notice immediate improvements: crisp, clean cold starts; quiet and vibration-free idling; and responsive, smooth acceleration—even when climbing steep grades, stop-and-go driving, or cruising long distances. Additionally, it reduces black smoke emissions, delivering satisfactory fuel efficiency and a smooth driving experience.

Standardized smart manufacturing and rigorous quality control directly from the source factory. Cost-Effective Sourcing by Eliminating Intermediaries: We effectively reduce procurement costs by bypassing middlemen—whose involvement often leads to issues such as out-of-tolerance fitment, uneven fuel delivery across cylinders, and high-pressure leakage risks. By leveraging standardized production bases for end-to-end quality control and removing unnecessary markups, we ensure 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 wasted labor/costs from 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 equipment installation and tuning.

Large-Scale Warehousing and Rapid Shipping: We recognize that operational and engineering equipment are high-utilization assets where fuel system failures lead to costly downtime and financial losses. Our warehouse maintains ample stock year-round; orders are packed and shipped within 24–48 hours of confirmation. This significantly shortens logistics lead times, helping fleet operators and equipment owners quickly restore operations and avoid losses caused by equipment inactivity.

Special Quenched Alloy Needle Valves with Wear-Resistant Hardened Coatings: We tackle issues caused by poor diesel lubricity and sulfur impurities, which often lead to premature wear and valve-core seizing in precision components. Our core components utilize high-hardness special bearing steel and advanced anti-corrosion surface treatments. This results in superior fatigue and wear resistance, ensuring stable performance even under harsh conditions and prolonged, high-load operation, thereby reducing the extra expenses associated with frequent repairs.

Heavy-duty truck long-haul transport and logistics delivery: Heavy-duty cargo trucks and tractor units operating under full load on highways, involving frequent starts and long-distance high-speed cruising. Maintenance personnel should replace the full set of high-precision injectors when drivers notice sluggish acceleration, a lack of power on inclines, or a significant increase in fuel consumption. After installation, fuel pressure builds up rapidly and stably; acceleration under heavy loads is robust and smooth, ensuring freight tasks are completed on time and efficiently.

Open-pit mining and heavy excavation scenarios: Heavy-duty excavators and mining dump trucks operate continuously in mines and earthworks, frequently facing prolonged overload and high-dust conditions. When equipment experiences slow starting, severe idling vibration, or stalling under heavy loads, maintenance teams install this fuel injector assembly. Precise fuel atomization allows the engine to deliver strong torque at low RPMs, handling the demands of heavy-load operations with ease.

1. Q: Can the product be used immediately after installation? Is complex calibration required?
   A: Each injector undergoes full-range parameter calibration during factory testing. Provided the fuel lines are clean and new sealing rings are used, the unit can be put into service immediately after installation by a professional technician using standard torque specifications and air-purging procedures.
2. Q: What are the stock levels and shipping lead 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 typically packed and shipped within 24–48 hours, while large-volume orders can be quickly scheduled for production.
3. Q: How are product quality and performance ensured before shipment?
   A: All injectors undergo assembly in a Class 100 cleanroom environment and 100% full-range bench testing. Tests cover critical metrics such as sealing integrity, pre-injection volume, full-load injection volume, and fuel return volume; rigorous standards ensure that every unit shipped is a high-quality product.
4. Q: What is the warranty period, and how is after-sales support handled?
   A: We offer a 12-month warranty. In the event of a performance failure due to non-human factors during the warranty period, we provide rapid replacement or technical support, ensuring you can use the product with confidence.