Caterpillar original 10R-3255 Fuel Injector, Diesel, Replacement for OEM 20R-1278, compatible with 392-0217, 10R-1278, for Caterpillar Generator Set Marine Excavator Truck original new injector

Engineered for the Caterpillar 3512B diesel engine platform, the 10R-3255 fuel injector is a high-precision, heavy-duty injection component designed to meet OEM performance standards. It delivers accurate fuel metering, optimal atomization, and stable combustion efficiency, ensuring reliable engine performance in the world's most demanding industrial environments. The injector is widely recognized across Caterpillar parts distribution networks and diesel rebuild databases under multiple references, including 10R-3255, 10R3255, 386-1769, 392-0217, 230-9457, and 20R-1278.

This injector fits the full CAT 3512B engine family, including 3512B HD, Marine, Generator Engine, and Industrial Power Unit variants. Typical installations include continuous-duty generator sets serving data centers, hospitals, airports, power plants, and telecommunication infrastructure, together with marine propulsion and auxiliary systems on commercial shipping, fishing fleets, passenger ferries, and offshore oil platforms. The 10R-3255 is also proven in mining operations, where engines run continuously under extreme dust, temperature, and load conditions.

Each injector is manufactured to exact dimensional tolerances, guaranteeing a proper spray pattern and consistent fuel delivery. Industrial-grade metallurgy and high-temperature resistance ensure durability in high-combustion environments, while precision-machined nozzle holes produce a fine fuel mist that improves combustion efficiency, reduces fuel consumption, and helps lower smoke and particulate emissions. With proper maintenance, the 10R-3255 delivers thousands of operating hours before overhaul, and global parts availability supports dependable long-term supply.