Caterpillar original 0R-3190 Common Rail Diesel Injector Fuel Injection Nozzle for 3116 3126 3114 Engine E320L E200B EL200B Excavator 7E-8729 original new injector

The Caterpillar 0R-3190 fuel injector is an original-grade replacement component engineered for the CAT 3116 series diesel engine, with related coverage for the CAT 3114 diesel engine. It is widely applied on E200B and EL200B excavators, 910E and 910F wheel loaders, and IT12B, IT14B, and IT14F integrated tool carriers used across construction, mining, earthmoving, road building, agriculture, and material handling operations. Before installation, compatibility should always be confirmed by engine serial number, arrangement number, original injector number, and the equipment parts manual.

Featuring precision fuel metering, fine atomization, and a heavy-duty body construction, the 0R-3190 injector delivers accurately metered diesel into the combustion chamber to support smooth idle, stable power output, clean combustion, reduced smoke, and improved fuel economy. The part is cross-referenced with 0R3190, 7E-8729, 7E8729, 0R-3002, 0R3002, 418-8820, 4188820, CA0R3190, and CA7E8729, giving distributors, fleet operators, and service workshops flexible searchability across multiple reference numbers while maintaining consistent OE-level performance.

Routine maintenance is essential for long service life. Operators should follow the recommended fuel filter service interval, use clean diesel to limit deposits and nozzle wear, drain the water separator regularly, inspect injector return flow and external leakage, monitor smoke color, and check idle quality for misfire or knocking. Spray pattern and flow tests are recommended when available, and replacing multiple injectors as a set can improve engine balance when needed.