Caterpillar original Caterpillar 30R-0004 replacement for OEM common rail injector original new injector

Engineered for Caterpillar C15, C15 ACERT, C16, and 3406E diesel platforms, the 30R-0004 fuel injector delivers OEM-equivalent performance across heavy-duty transportation, construction, mining, marine, and power generation applications. The unit features precise fuel metering and high-pressure atomization technology, which together improve fuel efficiency, enhance engine power output, and maintain stable idle performance under demanding load conditions. Its heavy-duty construction ensures long service life and reliable operation in extreme environments, while optimized injection dynamics contribute to reduced exhaust emissions and improved cold-start characteristics. The injector assembly supports the 3406E engine family along with industrial and marine C15 variants.

This injector serves as a direct replacement for multiple Caterpillar part numbers including 30R-0004, 10R0957, 20R8064, 328-2574, 387-9433, 295-1411, and 295-1412, providing fleet operators and service facilities with a versatile aftermarket solution. Each unit is manufactured to meet stringent quality standards, ensuring consistent performance and compatibility with OEM engine management systems. The assembly integrates seamlessly with existing fuel system architecture, supporting stable engine operation and reducing downtime across long-haul trucking fleets, mining haul trucks, construction machinery, industrial generator sets, and marine propulsion systems.

Proper maintenance extends injector service life and preserves engine performance. Operators should use ultra-clean diesel fuel, replace fuel filters at regular intervals, monitor injector balance rates through ECM diagnostics, and perform periodic leak-down and flow analysis testing. Avoiding contaminated fuel sources and adhering to OEM maintenance schedules helps prevent premature wear, maintains stable cylinder balance, and ensures the 30R-0004 injector continues to deliver reliable fuel delivery across all supported Caterpillar engine applications worldwide.