386-1776 20r-1283 Diesel Fuel Injector Common Rail Injector for Cater-pillar

This industrial-grade diesel engine electronic control unit injector (OE number: 386-1776, also available in Reman as 20R-1283) is a high-end fuel system core component specifically designed for Cater-pillar 3500 series (such as 3508, 3512, 3516 and their B/C series upgrades) high-power heavy-duty diesel engines. It is perfectly compatible with Cater-pillar D11N and D11R tracked bulldozers, 777D, 785, 789, and 793 series mining dump trucks, 992G and 994 series ultra-large wheel loaders, and 3500 series marine engines and generator sets. This product integrates cutting-edge micron-level precision manufacturing processes and wear-resistant coating technology, designed to withstand high-intensity, uninterrupted, and extremely harsh working conditions. When your heavy equipment is equipped with this new high-precision injector, you'll immediately notice a significant improvement. The previously dull, intermittently vibrating engine sound becomes remarkably regular and powerful. During high-load operations or when a ship is navigating the waves, the throttle response is extremely sensitive, and the billowing black smoke caused by poor fuel injection disappears instantly, restoring the equipment to a new, powerful performance.

• Direct Sales from Our Own Factory and Ample Stock: Heavy industrial machinery or ocean-going vessels often face extremely high losses due to downtime caused by component failures. Leveraging our strong, modern factory, we maintain a large, readily available inventory of Cater-pillar 386-1776 injectors. This allows us to bypass cumbersome layers of intermediaries and lengthy production cycles, enabling lightning-fast delivery after your order, efficiently restarting your core equipment.
• OEM-grade Injection Calibration and Superior Fuel Efficiency: Addressing the issues of soaring fuel consumption and sluggish power caused by poor atomization, we strictly adhere to OEM calibration data during production. Through a micron-level precision porous design, we ensure that fuel flow rate and injection angle seamlessly match the requirements of the cylinder combustion chamber. This not only completely eliminates the persistent problem of black smoke caused by incomplete combustion but also brings significant fuel economy to large generator sets and mining trucks, drastically reducing operating fuel costs.

• Extremely Heavy-Duty Transportation Operations in Open-Pit Mines: In the dusty and extremely harsh environment of open-pit iron or coal mines, Cater-pillar 777D or 789C mining dump trucks, weighing hundreds of tons, are struggling to climb steep mine roadways fully loaded with ore. Due to the steep slope and extremely heavy load, the engine is constantly operating at its maximum output. At this time, the 386-1776 fuel injector strictly executes the electronic control signals, injecting ultra-high-pressure diesel fuel into the cylinders in a perfectly atomized form. This ensures the engine doesn't stall or slow down during high-load uphill climbs, providing a continuous supply of strong torque.
• Distant-water fishing and port tugboat navigation: On the turbulent sea, deep-sea fishing vessels or auxiliary tugboats equipped with Cater-pillar 3512B marine main engines are forging ahead. The unpredictable sea environment requires the main engine to frequently switch between low-speed cruising and full-power propulsion. Operators increase the throttle according to sea conditions, the fuel injectors respond swiftly, and the valve needles open and close precisely, ensuring even fuel distribution and complete combustion across multiple cylinders. This effectively prevents severe main engine vibration caused by uneven fuel injection, ensuring sustained and stable vessel power and safe completion of long-distance voyages.
• Large-Scale Continuous Oil and Gas Extraction and Fracturing Operations: In remote shale gas or oil extraction sites, several pump sets composed of Cater-pillar 3516 diesel generator sets and power modules are conducting 24-hour continuous fracturing operations. The pump sets have stringent requirements for speed and output power stability, down to the second. Thanks to its excellent heat-resistant and wear-resistant structure, the injector ensures that every drop of fuel is efficiently converted into power within the cylinder, even during continuous operation for tens of hours, guaranteeing zero fluctuations in generator voltage and frequency.

Q: My equipment has a Cater-pillar 3512 engine. Can I use this model?

A: Cater-pillar 3500 series engines have various injector models available for different applications and power outputs. 386-1776 is mainly compatible with 3508, 3512, 3516, and certain specific models in their B/C series. The safest method is to provide our customer service with your engine's serial number or the stamped number on the old pump to verify.

Q: Is there a core charge deposit when purchasing the injectors for this heavy-duty machine?

A: You don't need to pay an expensive core charge (core component return deposit) when purchasing from us. We sell you brand new, high-quality injectors directly at the net price, saving you the hassle and expense of sending used core components back overseas.

Q: What is the warranty period for your injectors? What happens if they break down during use?

A: We offer a 12-month warranty on all brand new Cater-pillar series electronic injectors sold. If the damage is caused by non-human factors or oil contamination within the warranty period, we will provide free replacement of the injector or replacement parts.