Caterpillar original Fuel Injectors 250-1308 3920200 Replacement for OEM 10R-0957 for Diesel Engines 250-1312 for Heavy Construction Machinery Excavator original new injector

For procurement engineers, maintenance planners and diesel rebuild shops serving heavy industrial sectors, the CAT 250-1308 original new diesel fuel injector is a precision-engineered direct injection component purpose-built for Caterpillar 3512B, 3516B and 3508B HD engine platforms. Constructed from hardened alloy steel and engineered to meet or exceed OEM Caterpillar performance specifications, it delivers precisely metered, finely atomized fuel into combustion chambers at extreme high pressures to support stable, efficient engine operation under sustained heavy-duty cycles.

This injector includes a full set of official alternative, remanufactured and cross-reference numbers aligned with global industrial parts catalogs, OEM dealer portals and aftermarket procurement systems, simplifying part search and sourcing for cross-regional maintenance and repair teams. It is compatible with a broad range of critical equipment, including generator sets, marine propulsion systems, mining trucks, drilling rigs, industrial power units and heavy construction machinery, to support diverse industrial operational needs.

Optimized for continuous industrial duty cycles, the injector comes with a 6–12 month warranty and supports proper installation following Caterpillar torque and sealing guidelines, as well as routine maintenance protocols such as regular fuel filter replacement and periodic performance testing. When installed and maintained correctly, it helps improve fuel economy, lower exhaust emissions, enhance power delivery, reduce unplanned downtime and extend overall engine service life to cut total operating costs.