Caterpillar original For C9.3 C9 Engine, Fuel Injector 20R-5077, Cross Reference 20R-5073, for Wheel Loader 966M 966L 972L 972M Excavator, Replacement for OEM 456-3579, 460-8213 original new injector

For heavy-duty operations running on CAT C9.3 engine platforms, unplanned fuel system downtime can lead to costly project delays and reduced operational efficiency. The Caterpillar 20R-5077 original OEM remanufactured common rail diesel injector is engineered for demanding use across construction, mining, power generation, oil & gas, marine and industrial sectors. It is compatible with CAT C9.3, C9.3 ACERT and C9.3B engines, and fits equipment ranging from 330/336/340 excavators and 950M/962M/966M/972M wheel loaders to C9.3 generator sets, industrial power units and mining machinery.

Operating within a high-pressure common rail fuel system, the 20R-5077 injector responds to ECU signals to precisely regulate injection timing and needle lift. Its precision-machined multi-hole nozzle delivers an optimized spray pattern for thorough fuel atomization, enabling complete, efficient combustion that cuts exhaust emissions and improves fuel economy. Manufactured to OEM calibration standards, it offers high-pressure tolerance, corrosion resistance and extended durability for long service life in harsh work conditions.

Every 20R-5077 injector passes 100% flow testing to meet ISO-certified quality requirements and is backed by a 12-month warranty. Its verified cross-reference numbering system simplifies aftermarket replacement and inventory management for parts distributors, equipment service teams and fleet operators. Routine maintenance recommendations include using OEM-quality diesel, replacing fuel filters regularly and preventing water contamination to maximize injector service life.