Cummins 3935787 Fuel Injection Pump Assembly

The Cummins 3935787 is a Bosch P3000 series inline mechanical fuel injection pump designed for the Cummins 6BT 5.9L diesel engine. It delivers precise fuel metering and high-pressure injection timing for optimal combustion efficiency in heavy-duty commercial vehicle applications. The pump assembly integrates a mechanical governor and fuel shutoff solenoid for engine speed control and safe shutdown. This unit serves as a direct OEM replacement for Cummins part number 3935787 and Bosch part number 0402066709. It is commonly equipped on Dongfeng Tianlong flagship tractor trucks powered by the 6BT engine platform. The pump housing is constructed from high-strength cast iron with hardened internal components to withstand continuous high-pressure operation cycles.