original Fuel Injector 232-1166 for Excavator Wheel Scraper 3408 3412 Engine Parts, Replacement for 138-8756, Cross Reference 232-1167, 232-1168 original new injector

Designed for 3412 Series diesel engines, the 232-1166 fuel injector assembly supports 3412, 3412B, 3412C and 3412 DITA configurations, including marine, generator, industrial, mining and oilfield engine variants. Its equipment coverage includes generator sets, marine propulsion systems, mining trucks, industrial power units, construction machinery and emergency backup power systems. Within the mechanical fuel injection system, the injector meters diesel fuel and delivers it under high pressure into the combustion chamber. The atomized fuel then mixes with compressed air, supporting the combustion process required for dependable engine operation.

Precision-machined nozzle components, OEM flow-tested calibration and heavy-duty hardened steel construction support consistent fuel delivery. Corrosion-resistant surfaces and high-pressure fuel atomization add industrial-grade durability for demanding operating conditions. During each cycle, the needle valve opens at calibrated pressure and closes immediately after injection. This controlled process is intended to improve combustion efficiency, reduce fuel consumption and exhaust smoke, increase engine power output, lower emissions and extend engine life. The assembly is available new or remanufactured, with an OEM-equivalent quality standard and a 12-month warranty.

For identification, 2321166 is an alternative format, 0R-3639/0R3639 is the remanufactured number, and 232-1170, 232-1171, 127-8216, 8N-7005 and 7W-5929 are related service numbers. Installation best practices include cleaning the injector bore, replacing sealing components, using filtered diesel, verifying fuel pressure and inspecting for leaks after startup.