Caterpillar original C10 C12 Engine Common Rail Fuel Injector 212-3463 10R1258, for heavy duty diesel engine application, Cross Reference 212-3462, 20R0055 for Excavator original new injector

The Caterpillar 212-3463 fuel injector is a precision-engineered Electronic Unit Injector (EUI) designed for Caterpillar C12 diesel engine platforms and related heavy-duty industrial power systems. Manufactured according to OEM specifications, it delivers accurate fuel metering, superior atomization, and stable high-pressure injection under severe operating environments such as mining, construction, transportation, marine auxiliary power, oilfield operations, and power generation. As a direct replacement requiring no modification, it provides a dependable solution for maintaining engine performance and reducing downtime.
Inside the injector, a camshaft-actuated plunger generates injection pressures exceeding 20,000 PSI (1,400 bar), while the ECM-energized solenoid precisely determines injection timing, duration, and fuel quantity. Fuel exits through precision nozzle orifices as fine droplets, improving combustion efficiency, horsepower, torque output, cold starting, and engine response while reducing emissions. Premium hardened steel components, advanced anti-corrosion coating, and thermal stability under high exhaust gas temperatures ensure long service life in extreme-duty applications.
The 212-3463 is recognized across the global diesel injection industry through a comprehensive cross-reference structure covering OEM numbers 194-5083, 137-2500, 147-0373, and 203-7685, Caterpillar Reman references 10R-0963, 10R-9235, and 10R-1268, core return 0R-8773, and aftermarket number 390092X. It fits Caterpillar C12, C12 ACERT, C10, 3176, 3176B, 3176C, and 3196 engines powering construction equipment, articulated trucks, mining machinery, motor graders, and generator sets. Installation follows standard Caterpillar procedures, with injector trim calibration performed where applicable.