A durable, thermostatically controlled engine pre-heater for use with Lycoming IO model engines with air intakes on the bottom. (Please call to confirm engine application) It installs by mounting to the side of the sump using a heat cured adhesive. (incl) All necessary installation materials & instructions are included. Size: 2-3/4″x 4″. Watts: 220 @ 120V. Amps: 1.83. Two yr mfg warranty.