Caterpillar original Fuel Injector 107-7734 Replacement for 3116 Diesel Engine 200B 320B 322B 325B 446B Excavator, Replaces 107-7732 1077734 0R-8473 original new injector

The Caterpillar CAT 3116 3114 Diesel Fuel Injector 107-7734 1077734 is engineered as a direct OE-type replacement for Caterpillar 3116 diesel engines and compatible CAT 3114 applications across industrial, marine, generator, construction, and truck configurations. Manufactured with precision-machined nozzle tips and engineered sealing surfaces, this injector delivers consistent fuel metering and fine atomization to support stable idle, smooth throttle response, and efficient combustion across demanding duty cycles.

Built with heavy-duty internal components and a durable nozzle design, the 107-7734 injector withstands the high-pressure operating environment of the CAT 3116 fuel injection system. It serves as a reliable service replacement for cross references including 107-7732, 107-7733, 107-7735, 107-7773, 107-1230, 4P-2995, 7E-7607, 7E-8952, 127-8205, 127-8220, and 0R-8467, allowing distributors and repair workshops to consolidate inventory with a single trusted part number for excavators, loaders, bulldozers, generator sets, marine auxiliary engines, and industrial power units.

Routine maintenance is simplified through straightforward installation into the engine cylinder head fuel injection system. Use clean diesel fuel, replace the fuel filter regularly, drain the water separator, maintain correct engine oil condition, keep the air filter clean, and inspect injector leakage and exhaust smoke during scheduled service intervals to maximize injector service life, support fuel economy, and restore rated engine power in field conditions.