Caterpillar original 239-4909 Fuel Injector for Caterpillar C15 C16 C18 3406E, Replacement for OEM 249-0709, for Industrial Engine Applications, Cross Reference 10R-9236 10R1273 original new injector

Precision-engineered for the Caterpillar C15 ACERT engine series, the 239-4909 diesel fuel injector is an OEM-equivalent fuel system component built to perform in demanding heavy-duty operating conditions. It is compatible with all listed C15 ACERT variants, covering industrial, highway, construction, generator, and marine engine configurations, and is designed for cylinder head installation on compatible Caterpillar equipment. Manufactured from high-strength alloy steel, it withstands sustained high-pressure and high-temperature loads without structural degradation.

Operating as a high-pressure precision fuel metering device, the 239-4909 injector uses internal control valves to regulate fuel delivery quantity and injection timing, building calibrated pressure within its chamber before releasing ultra-fine atomized diesel into the combustion chamber. Optimized atomization improves air-fuel mixing to enhance combustion efficiency, boost power output, reduce fuel consumption and particulate emissions, and deliver stable idle performance and faster throttle response. These benefits also support extended engine service life under proper operating conditions.

This injector supports a broad range of heavy-duty equipment across core industrial sectors, including heavy-duty and mining trucks, excavators, wheel loaders, bulldozers, generator sets, marine engines, and industrial power systems. It features corrosion resistance, OEM-matched calibration, and long-term operational stability to meet demanding industrial application requirements. Every 239-4909 injector comes with a 12-month warranty and complies with standard Caterpillar installation and maintenance guidelines for consistent, reliable performance.