79-BC404836
Fuel Injector Plunger and Barrel Assembly
Mack

This assembly plays a vital role in the fuel injection system, controlling the precise delivery of fuel into the engine cylinders. Its high-precision components ensure accurate fuel atomization, which is essential for optimal combustion, power output, and fuel efficiency. The plunger and barrel work together to maintain consistent injection timing and pressure, directly influencing engine performance and emissions. Proper maintenance and timely replacement of this assembly are critical for preventing fuel delivery issues, rough idling, or reduced power. The durability of this part under high-pressure conditions makes it a key element in maintaining engine reliability. Source One Parts Center offers this assembly as a quality replacement to support your engine’s fuel system integrity and efficiency.