External Tank Hook-Up Kit for Heatstar Indirect Fired Forced Air Heaters. Compatible with Kerosene, JP8, #1 Diesel Oil, #2 Diesel Oil, #1 Fuel Oil, and #2 Fuel Oil. Allows the heater to be connected to an external tank in addition to the internal tank. Permanent installation with valves to control which tank is being utilized by the heater. Does not replace internal tank. Hose and external tank not included.