Caterpillar original Common Rail Fuel Injector 10R-1280, 250-1308, 245-8272, 10R-8795, Replacement Fuel Injector for Diesel Engines, Construction Machinery original new injector

The Caterpillar 10R-1280 fuel injector assembly is a precision-engineered diesel fuel system component designed for the CAT 3500 Series heavy-duty engine platform, with core compatibility for 3512B engines. As a highly sought-after replacement part in the global diesel engine aftermarket, this original new unit is validated for deployment across marine propulsion, mining, oilfield power, stationary generator, offshore platform, and heavy industrial scenarios, where it delivers reliable performance in continuous, severe-duty operating conditions.

Operating within Caterpillar’s high-pressure diesel injection system, the 10R-1280 acts as the final fuel metering device in the fuel delivery cycle. Its full operational sequence includes fuel pressurization, high-pressure transfer to the injector body, needle valve activation, micron-precision atomization, controlled combustion chamber delivery, and fuel return. The optimized atomization it delivers improves engine power output, fuel economy, combustion efficiency, throttle response, and overall engine service life, while also reducing exhaust emissions.

Built to industrial-grade specifications, the injector features high-precision fuel quantity control, optimal spray patterns, hardened alloy steel construction, corrosion and above-500°C high-temperature resistance, and direct OEM fitment with no on-site modification required. Manufactured in compliance with ISO 9001 quality standards, it comes with a 12-month warranty and is supported by Caterpillar’s global distribution network. Its extensive cross-reference part number coverage also simplifies sourcing for maintenance, repair and operations teams.