Caterpillar original Common Rail Diesel Fuel Injector, 7E-6408, 4P-9077, 4P-9075, for 3508 3512 3516 Engines, Replacement for OEM 4P-9076, Suitable for Various Types of Vehicles original new injector

Purpose-built for heavy-duty Caterpillar diesel power platforms, the 4P-9077 Injector Group Fuel serves as a critical precision component within the fuel injection system of 3500 Series engines. It is fully compatible with Caterpillar 3512A and C3512A industrial diesel engines, delivering precise fuel metering, optimized atomization and stable combustion efficiency to support reliable engine output under extreme operating conditions. This injector accommodates high-load operation and continuous duty cycles for demanding industrial use cases.

Manufactured to OEM-quality standards, this industrial-grade injector features a precision nozzle design, high-pressure fuel delivery capability, and robust corrosion and wear resistance for long-term durability. It supports a wide range of heavy-duty equipment across five core sectors: power generation, marine, mining, construction and oilfield operations, covering use cases from standby generator sets and marine propulsion vessels to mining haul trucks and oilfield power units.

Designed for direct replacement, the 4P-9077 injector requires adherence to official Caterpillar service procedures during installation, including replacement of sealing washers and O-rings and pre-installation fuel system cleaning. Regular inspection, clean fuel filter maintenance and scheduled performance testing support long service life, while documented common fault symptoms include hard starting, abnormal exhaust smoke, power loss, rough idle and fuel leakage to facilitate troubleshooting.