Caterpillar original Caterpillar 170-5240 diesel fuel injector common rail assembly replacement for OEM new injector original new injector

The Caterpillar C12 Fuel Injector 170-5240 is a heavy-duty diesel fuel injector assembly engineered for CAT C12 diesel engine fuel delivery systems. Designed to original equipment reference standards, this injector GP provides precise fuel atomization, accurate injection timing, and consistent fuel metering, supporting combustion stability and long service life across demanding industrial operations. It is widely specified in professional diesel engine repair, engine overhaul programs, and remanufactured injector replacement projects.

This injector assembly addresses common Caterpillar C12 engine symptoms including hard starting, excessive smoke, rough idle, engine misfire, poor fuel economy, and reduced power output. Built for heavy-duty trucks, construction machinery, mining equipment, diesel generator sets, and marine auxiliary engines, the 170-5240 injector GP delivers reliable performance for fleet maintenance and aftermarket diesel parts distribution channels serving global Caterpillar engine operators.

Compatible with Caterpillar C12, C10, 3176C, and 3196 engine platforms depending on serial number and calibration, the 170-5240 cross-references additional part numbers such as 348-4090, 20R-0055, 10R-1258, 208-9160, 223-5328, 212-3460, 229-8842, 10R-1814, 317-5278, 350-7555, 20R-0056, 166-0149, 0R-9530, and 10R-7222. This broad interchangeability supports flexible inventory management for distributors, rebuild shops, and heavy equipment service providers seeking dependable Caterpillar fuel system replacement solutions.