original 387-9429 high pressure common rail injector assembly aftermarket replacement new injector original new injector

The C7 fuel injector 387-9429 is engineered as a direct OEM replacement for C7 and C7 ACERT 7.2L diesel engines equipped with the HEUI (Hydraulic Electronic Unit Injection) system. This injector integrates an electronic solenoid control, a precision plunger assembly, and a multi-hole nozzle to deliver accurately metered fuel into the combustion chamber. High-pressure engine oil amplifies the fuel pressure inside the injector body, while the ECM sends electrical signals to regulate injection timing for consistent engine response across varying load conditions.

This injector is compatible with a wide range of applications including excavators, wheel loaders, backhoe loaders, motor graders, compactors, off-highway equipment, medium-duty commercial trucks, school buses, industrial generator sets, standby power systems, and marine propulsion engines. It cross-references with multiple OE part numbers such as 10R-4762, 20R-8058, 222-5962, 236-6011, 238-9808, 241-3239, 243-4503, 295-1409, 328-2584, EX634762, FS10R4762, and R10R4762, ensuring broad interchangeability for global aftermarket and fleet maintenance operations.

Each unit is brand new and 100% bench tested to verify spray pattern, solenoid response, and flow rate under simulated operating pressures. The high-strength steel construction and specialized corrosion-resistant coating provide durability in severe-duty environments, supporting improved fuel economy, reduced emissions, and long service life in industrial, marine, construction, mining, and power generation sectors.