Caterpillar original 1OR-4763 fuel injector for C7 engine 324D 325D 326D 329D excavator 20R-8059 20R-8057 243-4503 217-2570 235-2887 replacement original new injector

Engineered for demanding heavy-duty operations, the C7 Fuel Injector 1OR-4763 is a precision-manufactured diesel injection component designed as a direct OEM-quality replacement for C7 and C7 ACERT engines. Constructed from high strength alloy steel, this common rail electronic fuel injector delivers accurate fuel atomization, optimized combustion efficiency, and reliable long-term engine performance across construction, industrial, marine, and vocational truck applications. It cross-references with 10R-4763, 1R-4763, 387-9433, 328-2574, 326-4700, 3879433RX, and 10R4763RX, offering global sourcing flexibility for fleet operators and MRO buyers.

This injector supports improved fuel economy, reduced exhaust emissions, enhanced engine power, and faster throttle response, while contributing to extended engine life and lower operating costs. It is ideally suited for excavators, wheel loaders, motor graders, generator sets, industrial power units, marine propulsion systems, and heavy-duty trucks powered by the C7 platform. Every unit meets stringent quality benchmarks to ensure consistent injector balance rates and dependable ECM communication.

Installation requires disconnecting battery power, removing the valve cover, cleaning the injector bore, replacing sealing washers and O-rings, priming the fuel system, and verifying injector balance rates and ECM fault codes such as Fuel Injection Pressure Fault, Injector Solenoid Fault, and Cylinder Contribution Fault. Recommended maintenance includes OEM-quality fuel filters, clean diesel fuel, regular water separator draining, and scheduled ECM diagnostics for maximum service life.