Caterpillar original Caterpillar 173-9268 diesel fuel injector replacement for CAT 3406E engine C12 C15 new injector original new injector

The Caterpillar 3412 fuel injector with OE number 173-9268 is a precision-engineered industrial component built to meet or exceed OEM standards. Designed for high-pressure direct fuel injection, it delivers accurate fuel metering and consistent spray atomization, supporting stable engine operation, reduced emissions, and extended engine service life under demanding working conditions. Compatible cross references include 326-1646 and 326-1647, providing dependable replacement options for fleet operators and service technicians.

This injector features a hardened steel nozzle and needle paired with a precision-machined plunger, ensuring long-term durability and reliable sealing under high combustion pressures. The high-pressure solenoid-controlled design enables precise injection timing and fuel delivery, while high-temperature resistant materials allow consistent performance in harsh industrial and marine environments. Each unit is rigorously tested to meet CAT 3412 fuel pressure and flow specifications as well as ISO quality standards.

The 173-9268 injector is engineered for broad compatibility across Caterpillar 3412 applications, including CAT D11 and D10 dozers in construction, CAT 789 haul trucks in mining, CAT 3412 marine engines, and CAT 3412 generator sets for power generation. For optimal performance, operators should inspect fuel injectors every 500 operating hours, clean the nozzle and fuel lines to prevent clogging, test the injection spray pattern and pressure regularly, and replace faulty injectors promptly to avoid secondary engine damage.