The JLG Engine Coolant Level Deaeration Tank is used on various JLG/SkyTrak telehandlers (Rough terrain forklift, Material handlers). The coolant level sensor is sold separately. For use on models: JLG G6-42A, G9-43A, G10-43A (LS equipped machines) and SkyTrak 6036, 6042, 8042, 10042, 10054, and 12054. Please verify the proper part number for your machine's serial number range.