Caterpillar original Common Rail Fuel Injector 7C-9578 7E-6408 7E-3381 0R-1756 for Caterpillar Diesel Engine Construction Machinery OEM Replacement original new injector

The Caterpillar 7C-9578 original new common rail fuel injector is a precision-engineered component purpose-built for CAT 3512A series industrial diesel engines. Manufactured strictly to OEM-grade tolerances and quality standards, it features high-grade alloy steel construction with anti-corrosion coating, and holds ISO 9001, CE and RoHS certifications to meet global industrial procurement requirements. Designed as a direct flange-mounted replacement part with OE number 7C-9578 (alternatively formatted as 7C9578), it delivers perfect fitment without on-site modification for compatible engine setups.

This mechanical common rail injector operates at a 1800–2000 bar working pressure, with a multi-hole precision nozzle that supports accurate fuel metering and optimal atomization. It enables thorough air-fuel mixing and complete combustion, effectively boosting engine efficiency, cutting exhaust emissions, and extending overall engine service life. It is cross-compatible with part numbers 7C9579, 9N-9352 and 6I-3558, and fits CAT 3512A, 3512C and 3516B diesel engines across heavy equipment lineups.

Suitable for marine, construction, industrial power generation and mining scenarios, this injector supports equipment including marine generators, excavators, bulldozers, heavy-duty mining trucks and stationary power plants. It comes with a 12-month industrial warranty, and follows standardized installation and maintenance protocols: regular 500-hour inspections, use of high-quality diesel and filters, and periodic spray pattern testing can reduce fault risks and lower long-term operational costs for B2B operators.