A Prelubrication Pump Relay is used to control the operation of a prelubrication pump. The prelubrication pump relay is located in the engine compartment of the machine. It is a small, black box with several terminals. The relay is connected to the prelubrication pump, the ignition switch, and the engine control unit.Attributes: • Manufactured to precise specifications and are built for durability, and reliability• Prevents the prelubrication pump from running when the engine is not runningApplications:A Prelubrication Pump Relay is used to control the operation of the prelubrication pump and protect the prelubrication pump from overload.