Caterpillar original Diesel Fuel Injector for CAT C7 C9 Engine Assembly Components, Cross Reference 258-8745, Application 254-4339, Replacement for OEM 254-4330, 265-8106 original new injector

For distributors, rebuilders, and fleet maintenance teams servicing Caterpillar C9-powered equipment, the Fuel Injector 265-8106 (2658106, CA2658106, CAT-2658106) offers a precision-engineered, original-quality replacement for high-pressure electronic diesel injection systems. Designed for the Caterpillar C9 engine series — including C9 ACERT and selected C9.3 industrial platforms — this injector is proven in CAT 324D, 325D, 329D, 330D, and 336D excavators, C9 generator packages, mining machinery, marine engines, and industrial power units across construction, mining, oil and gas, and power generation sectors.
Functioning as an electronically controlled fuel metering device, the injector responds to ECM commands based on engine speed, load, fuel demand, and combustion requirements, delivering precisely calculated injection quantities at pressures up to 1800 bar. Its multi-hole precision nozzle atomizes fuel into microscopic droplets that mix thoroughly with compressed air, enabling complete combustion, stable power output under heavy load, lower fuel consumption, and reduced exhaust emissions. Hardened internal components enhance wear resistance under sustained high-pressure operation, while a corrosion-resistant surface treatment guards against sulfur contamination and moisture exposure.
Built to OEM-equivalent performance standards and backed by a 12-month warranty, the 265-8106 meets Caterpillar fuel delivery specifications. It cross-references 235-5261, 238-8092, 242-0857, 254-4330, 254-4339, 254-4340, 266-4446, 267-3360, 267-3361, 267-9710, 267-9717, 267-9722, and 293-4073, with remanufactured equivalents 10R-2828, 10R-7222, and 10R-4764 — simplifying identification across the global aftermarket, remanufacturing, and engine rebuild supply chain.