Caterpillar original Mechanical Diesel Fuel Injector 173-4647 Engine Nozzle, Replacement for OEM 3116 E320B E322B E325B Excavator Fuel Components original new injector

The Caterpillar 3116 diesel fuel injector 173-4647 is engineered as an original type replacement for medium-duty Caterpillar engine platforms, including the 3114, 3116 DIT, 3126, and 3126B families. Produced as a direct-fit assembly, it supports global B2B distribution and matches multiple cross references such as 10R-8996, 127-8216, 127-8209, 0R-8483, 0R-8682, 127-8222, 127-8205, 127-8213, 107-7733, and 107-7773, allowing fleet operators, rebuilders, and parts dealers to consolidate inventory under a single proven injector number.

Precision fuel metering and atomized spray delivery are core to this injector's performance, enabling stable cylinder combustion across demanding duty cycles. Each unit is built for heavy-duty diesel operation with leak-resistant sealing, tested flow performance, and direct replacement installation, helping resolve common engine complaints such as hard starting, rough idle, poor acceleration, black smoke, fuel leakage, and unstable combustion in excavators, loaders, on-highway trucks, generator sets, marine auxiliary engines, and mining or quarry equipment.

Routine maintenance, including clean diesel fuel, regular fuel filter replacement, water separator draining, and injector inspection at high operating hours, will extend service life. For engines showing symptoms like white smoke, misfire, knocking, or excessive exhaust temperature, the 173-4647 injector offers a reliable reman-style replacement solution backed by multi-number catalog matching and global export supply.