original 6I-3075 Common Rail Diesel Fuel Injector for 3516 3500A Engine 777B 785 789 Excavator Construction Machinery Spare Parts 6I3075 0R8680 7C9578 original new injector

Engineered for demanding heavy-duty operations, the 6I-3075 Fuel Injector is a precision-manufactured fuel injection component designed as a direct fit for 3512A engines and other 3500 Series power units. Built to OEM equivalent flow calibration, this injector delivers consistent cylinder-to-cylinder balance, superior atomization, and dependable high-pressure diesel performance across generator sets, marine propulsion systems, mining trucks, oilfield power units, and industrial pump stations. Authorized cross references include 6I3075, 0R-8680, OR-8680, 2815-01-430-3140, 7C-9795, and 7C-4184, providing broad interchangeability for maintenance and rebuild programs.

The assembly features a precision-machined nozzle, corrosion-resistant construction, and a leak-resistant sealing system engineered for long operational life under continuous-duty loads. Benefits include improved fuel atomization, enhanced fuel economy, reduced emissions, and stable engine output—critical for offshore emergency power systems, mining power stations, and remote oil & gas generation equipment. Each unit is flow-tested to ensure consistent injection characteristics and reliable performance in 3512, 3512A, and 3516 platforms.

Installation requires shutting down the engine, relieving fuel pressure, removing the old injector, cleaning the bore, inspecting sealing surfaces, and torquing to service specification before bleeding the fuel system. Recommended maintenance includes clean diesel fuel, regular filter replacement, monitoring injector performance, avoiding water contamination, and following OEM service schedules. Symptoms such as black smoke, white smoke, or power loss typically indicate nozzle wear, restricted flow, or fuel contamination requiring inspection.