Caterpillar original  101-8673 fuel injector 3116 engine diesel fuel system  original new injector

The Caterpillar CAT 3116 3114 MUI Diesel Fuel Injector 101-8673 1018673 is engineered to deliver OEM-style fitment and reliable performance for heavy-duty diesel applications. Designed for the CAT 3116 truck engine and cross-referenced for 3114 and 3116 MUI diesel engines, this injector supports truck engine service, construction machinery maintenance, industrial power unit servicing, generator set repair, and fleet maintenance operations. Compatible equipment includes wheel loaders, excavators, off-highway diesel machinery, and injector remanufacturing programs.

Manufactured with precision tolerances, stable sealing surfaces, and controlled spray performance, the 101-8673 fuel injector helps maintain efficient fuel delivery and consistent combustion across demanding working cycles. It is available through new aftermarket or remanufactured supply channels, and each unit is packaged in sealed protective material that clearly displays 101-8673, 1018673, 127-8213, 1278213, 0R-8473, 0R8473, 0R-4374, 0R4374, 0R-3382, 0R3382, 4P-1734, 4P1734 for straightforward inventory identification.

Before installation, technicians should confirm the engine model, serial number, arrangement number, and original injector part number, then clean the injector bore and sealing surface while replacing sealing components as required. Use clean diesel fuel, replace fuel filters on schedule, drain water separators, and keep the fuel system free from dust, water, and metal particles. Final torque values, adjustment steps, and timing procedures must follow the official Caterpillar service manual.