Caterpillar original 101-8673 Diesel Common Rail Fuel Injector 0R-4374 107-7733 for 3116 3114 C3116 Engine E320B E322B E325B Excavator Truck Auto original new injector

The Caterpillar CAT 3116 3114 MUI Diesel Fuel Injector 101-8673 1018673 is engineered to deliver OEM-style fitment and reliable fuel delivery for CAT 3116 truck engines as well as 3114 and 3116 MUI diesel engine applications. Built with precision manufacturing standards, the injector ensures stable sealing performance and controlled spray pattern, supporting consistent combustion efficiency across heavy-duty operating conditions. The product is offered through multiple supply channels, including new aftermarket, remanufactured, rebuilt, and service-exchange options, giving distributors and fleet operators flexible sourcing for maintenance, overhaul, and injector remanufacturing programs.

This injector serves a wide range of industrial and on/off-highway equipment, including truck engines, wheel loaders, excavators, construction machinery, industrial power units, generator sets, and off-highway diesel platforms. Cross-references 127-8213, 0R-8473, 0R-4374, 0R-3382, and 4P-1734 confirm interchangeability within the same OE number family, simplifying inventory management and part substitution for global B2B buyers, repair workshops, and wholesale channels.

Proper installation and maintenance are essential for long service life. Use clean diesel fuel, replace fuel filters on schedule, drain water separators regularly, and avoid contamination during injector installation. Store the injectors in sealed packaging protected from moisture, dust, and impact. If the engine shows hard starting, rough idle, black smoke, power loss, or excessive fuel consumption, inspect the injector spray pattern, leakage, fuel delivery, sealing condition, fuel pressure, cylinder compression, and engine timing before final diagnosis.