Caterpillar original  386-1767 Fuel Injector 386-1754 386-1771 for 3508B 3512B Engine Construction Machinery Replacement for OEM new injector original new injector

The Caterpillar CAT 3512B Fuel Injector 386-1767 is an original OEM electronic unit injector engineered for heavy-duty diesel engine platforms within the CAT 3500 series. Designed to deliver high-precision fuel atomization under all operating conditions, this injector ensures accurate fuel quantity control for V12 diesel configurations, supporting stable power output across varying load demands. It is fully compatible with CAT 3512B, 3512, 3512C, 3516B, 3516C, 3508, 3508B, 3508C, 3524, and 3524B engines used in generator sets, marine propulsion, mining equipment, oilfield power units, and continuous-duty industrial power plants.

Manufactured to strict OEM dimensional and performance specifications, the 386-1767 injector features advanced metallurgy that provides high temperature resistance and corrosion protection against fuel contamination and harsh environmental exposure. Enhanced combustion efficiency improves fuel utilization while reducing exhaust emissions, contributing to longer service intervals and lower total cost of ownership. The injector assembly maintains consistent engine performance in continuous-duty applications, including emergency backup power systems, heavy construction equipment, and industrial compressor and pump drive systems.

Routine maintenance should include the use of OEM fuel filters, clean diesel fuel, monitoring of fuel pressure and injector balance rates, and periodic bench testing of the injector assembly. Standard installation procedure requires cleaning the cylinder head injector bore, installing new sealing components, lubricating the O-rings, torquing the injector to Caterpillar specifications, bleeding the fuel system, verifying fuel pressure, and performing operational testing. Cross reference numbers include 379-0509, 10R-3255, 386-1758, 392-0208, 386-1760, 20R-1272, 392-2000, 124-6351, 162-8811, 0R-8893, 0R-8691, 10R-1291, 20R-1276, 2290196, 2501315, and 3920215.