Caterpillar original 0R-8338 Fuel Diesel Injector Pump HP for Caterpillar 3508 3512 3500A Replacement for OEM 7E-9983 Cross Reference 9Y-1785 9Y-4544 for Excavator Truck original new injector

Purpose-built for Caterpillar’s heavy-duty 3500 diesel engine family, the 0R-8338 (also referenced as 0R8338, OR-8338, OR8338) is a CAT-branded diesel fuel injector designed for direct, drop-in replacement. It cross-references to part numbers 111-3718, 1113718, CA0R8338 and CA1113718, and is compatible with CAT 3508, 3512, 3512A, 3512B and 3516 direct injection engines. Manufactured to meet OEM CAT specifications, it is available in new, OEM-equivalent and remanufactured configurations to suit diverse operational needs.

This high-pressure direct injection injector features OEM-calibrated spray patterns, high-strength alloy construction and OEM-grade Viton sealing components to minimize leakage and resist thermal and mechanical stress in harsh operating conditions. It delivers precisely metered, finely atomized fuel to the combustion chamber to support stable flow rates, improved combustion efficiency, increased power output, reduced emissions and extended service life, matching original Caterpillar performance standards.

It supports a wide range of industrial applications across power generation, marine, mining, construction and oil and gas sectors, including gensets, marine propulsion systems, mining trucks and backup power units. Backed by a 12–24 month warranty (varies by supplier), it comes with global shipping and export documentation support. Scheduled testing and maintenance per Caterpillar guidelines is recommended to maximize uptime and service life.