original 10R-1259 Common Rail Fuel Injector for C10 C12 Engine 345B 345C Excavator Diesel Injector Nozzle Assembly 10R1259 212-3467 2123467 original new injector

Engineered for demanding heavy-duty diesel platforms, the 10R-1259 common rail fuel injector delivers precise, high-pressure fuel atomization for C10 and compatible C12 engine series. Operating within a 1500–1600 bar common rail system, this injector features multi-hole precision nozzles and electronic actuation to ensure fast response, accurate injection timing, and repeatable combustion performance across continuous heavy-load duty cycles. Cross-referenced with 10R1259, 387-9435, 328-2579, 293-4070, 241-9596, 573-4235, 212-3467, 317-5278, 350-7555, 10R-0967, and 0R-8773, this component offers broad interchangeability for global fleet maintenance programs.

Manufactured with high-strength hardened alloy construction, the injector body resists mechanical wear and thermal stress typical of high-output diesel engines. Protective anti-corrosion coatings, premium environmental seals, and O-rings safeguard against fuel contamination and hostile operating conditions. The unit is also referenced in service parts lists for C9 engines, industrial generator motors, marine auxiliary engines, and large agricultural diesel powerplants, making it a versatile solution for construction machinery, mining fleets, power generation systems, marine propulsion auxiliaries, and high-power agricultural tractors across North America, Europe, Asia Pacific, the Middle East & Africa, and Latin America.

Installation requires torqueing hold-down bolts to 40–45 Nm, replacing seals and O-rings, and following OEM bleed procedures. Recommended maintenance includes visual inspection every 250 hours, fuel system cleaning every 500 hours, and flow testing every 1000 hours to sustain optimal injector performance.