original Common Rail Fuel Injector 392-6214 20R-1275 386-1766 3508B 3512B 3516B Injector for erpillar Machinery Diesel Engine original new injector

Engineered for demanding heavy-duty applications, the 392-6214 diesel fuel injector (also identified as CAT3926214 and INJ3926214) delivers OEM-grade performance for 3508B, 3512B, and 3516B engines. This high pressure injector assembly is a direct replacement solution cross-referenced with 20R-1275, 386-1766, 20R-1262, 192-2817, 392-0215, 392-0216, 250-1314, 437-7547, and 359-5469, giving procurement teams and MRO facilities flexible sourcing options across the 3500 series platform.

Built with hardened materials, corrosion-resistant components, and a precision nozzle design, the injector achieves precise atomization for improved combustion, reduced fuel consumption, and lower emissions. Operators benefit from stable idle behavior, higher sustained power output, and extended engine life, even under continuous load conditions found in industrial gensets, marine vessels, mining trucks, construction machinery, and oil & gas installations. OEM tolerance compliance ensures reliable spray patterns and consistent injection pressures across duty cycles.

Recommended installation includes inspecting the injector bore for debris, cleaning fuel supply lines, replacing seals and O-rings, applying manufacturer-approved lubricants, and torquing hold-down bolts per specification. Verify spray pattern on a test bench and confirm no fuel leakage under idle and load testing. This 3512B-series injector supports global service networks across North America, South America, Europe, the Middle East, Africa, Asia Pacific, and Australia, meeting the sourcing needs of power plants, shipyards, mining companies, and generator rental fleets worldwide.