Caterpillar original Caterpillar 107-7734 fuel injector 3306 engine replacement for OEM new injector original new injector

The Caterpillar CAT 3116 3114 Diesel Fuel Injector 107-7734 1077734 is engineered as a direct OE-type replacement for the CAT 3116 and 3114 diesel engine series. Designed to meter, atomize, and deliver diesel fuel into the combustion chamber with precision, this injector supports stable idle quality, efficient fuel economy, and reliable power recovery across demanding working conditions. Its heavy-duty construction and durable nozzle design ensure consistent spray patterns and long service life, while the engineered sealing surfaces help prevent fuel leakage and maintain correct injection pressure.

This fuel injector is widely applied in construction machinery such as excavators, loaders, and bulldozers, as well as in generator sets, marine auxiliary engines, industrial power units, agricultural machinery, mining equipment, and truck engine repair operations. The direct replacement design allows straightforward installation into the engine cylinder head fuel injection system without modification, making it suitable for distributors, importers, repair shops, fleet maintenance companies, engine rebuild factories, and equipment owners seeking dependable CAT 3116 engine parts.

The injector carries OE number 107-7734 and is interchangeable with cross reference numbers including 107-7732, 107-7733, 107-7735, 107-7773, 107-1230, 4P-2995, 7E-7607, 7E-8952, 127-8205, 127-8220, 0R-8467, and 0R-7734, allowing broad compatibility across multiple CAT 3116 series engine variants. Maintenance recommendations include using clean diesel fuel, replacing the fuel filter regularly, draining the water separator, and performing periodic professional diagnosis to sustain stable engine performance and reduce downtime.