Caterpillar original C9 Diesel Engine Fuel Injector 328-2573 235-5261 Cross Reference 267-9734 for Excavator D6R D6R III D6T D7R D7R LGP D7R XR 330D Replacement for OEM 293-4072 original new injector

For fleet maintenance managers, construction equipment dealers and industrial parts procurement teams, the Caterpillar 328-2573 electronic unit fuel injector is a purpose-built replacement component designed for the full CAT C9 diesel engine series. Manufactured to meet OEM-equivalent standards, every injector undergoes 100% factory testing prior to distribution and comes with a 12-month warranty for reliable performance. It is compatible with all standard C9 engine variants, including ACERT, industrial, generator and marine C9 units.

Controlled by the engine control module (ECM), the injector adjusts fuel delivery based on real-time operating parameters including engine speed, load, throttle position, air intake pressure and temperature sensor inputs to deliver precise fuel metering and optimized atomization. This design supports improved fuel economy, reduced exhaust emissions, enhanced throttle response and enhanced combustion efficiency, while its industrial-grade construction delivers superior thermal resistance and long service life under severe heavy-duty operating conditions.

The 328-2573 injector is suitable for a wide range of heavy equipment across construction, mining, power generation, marine, industrial and agricultural sectors, including excavators, wheel loaders, motor graders, mining trucks, generator sets and marine vessels. As with all replacement fuel system components, final compatibility shall be confirmed using the equipment’s engine serial number and official OEM parts catalog prior to installation.