Keep your diesel engine running reliably with this heavy-duty 12V fuel shut off solenoid. Featuring robust metal construction and a secure connector assembly, this solenoid serves as a crucial engine stop switch component. The unit comes complete with wiring harness for straightforward installation. Designed as a direct replacement for part numbers 3931570 and 5016244AA, this solenoid delivers consistent performance in controlling fuel flow. The durable zinc-plated housing provides excellent resistance against corrosion, while the precision-engineered internal components ensure smooth operation. Perfect for maintaining proper fuel system function in compatible diesel engines, this solenoid helps prevent fuel drainage when the engine is off. The weatherproof electrical connector ensures reliable operation in various conditions, while the mounting bracket allows for secure installation.