This is a 24V Stop Solenoid (Part No. 3864274) specifically designed for Caterpillar (CAT) E320b excavators (and associated E320b equipment). It is a critical electrical component that controls the engine’s fuel supply to enable safe and reliable shutdown of the E320b.
- Part Number: 3864274 (OEM-matched reference number for E320b applications)
- Operating Voltage: DC 24V (fully compatible with the E320b’s standard 24V electrical system)
It is 100% compatible with CAT E320b excavators (all serial number ranges of the E320b series). For precise fitment, we recommend confirming your E320b’s serial number with our team if modifications have been made to the engine/fuel system.
The solenoid regulates the engine’s fuel flow to manage startup and shutdown:
- When powered (24V supplied), it opens the fuel passage to maintain engine operation;
- When power is cut (e.g., ignition off), it closes the fuel passage instantly to shut down the engine—preventing uncontrolled running and ensuring operator safety in harsh job site conditions.
Tonkee Machinery Logo
