The Cat 320D is a mainstay among medium-sized excavators at construction sites and mines worldwide, playing a key role in tasks ranging from earthmoving and overburden removal to infrastructure construction.
The Cat 320D is powered by the C6.4 engine, which demands high standards for fuel injection precision; the fuel injector is responsible for controlling injection pressure, timing, and atomization. Harsh operating conditions—such as fuel impurities, prolonged heavy loads, and high-temperature operation—accelerate the wear of the injector’s precision internal components.

Our PMC-TECH 326-4700 (10R-7675) fuel injector is a flagship product; a high-quality injector represents far more than just a simple replacement part. From the assembly of precision internal components to comprehensive testing on common-rail test benches, every parameter—including fuel return volume, injection pressure, atomization quality, and sealing performance—undergoes strict calibration. Uniform and thorough atomization improves combustion efficiency, restoring the engine’s original power while reducing black smoke emissions and overall fuel consumption, thereby effectively avoiding the need for repeated repairs.

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