Cummins 3935432 Fuel Shutoff Solenoid Assembly

The Cummins 3935432 is a 24V DC fuel shutoff solenoid designed for Euro 2 compliant 5.9 liter B series engines. It operates as an energized-to-run device, allowing fuel flow when powered and cutting fuel supply when de-energized to stop the engine. The unit features a two-bolt side mounting flange and a three-pin round electrical connector. The plunger rod length measures 5.15 inches (130.8 mm) in the retracted position. This solenoid mounts directly on the fuel injection pump (typically Bosch VE or P7100 pumps) and is critical for engine start/stop control in heavy-duty applications. Constructed with a corrosion-resistant plated steel body and high-temperature internal coil windings rated for continuous duty cycles. The solenoid replaces Cummins OEM numbers 3935430, 3939703, and 3287406. It cross-references to Woodward (Synchro-Start) part numbers SA-4755-24, SA-4756-24, and SA-4892-24. Aftermarket equivalents include PAI Industries 180192. Primary applications include Cummins 6BT 5.9L, 4BT 3.9L, and 6CT 8.3L engines used in Komatsu PC200-6 excavators, Hyundai R220-5 excavators, CASE 845 motor graders, and various medium-duty trucks.