Generac 0J8315A Solenoid Plunger & Spring Assembly. This updated plunger features a non-stick coating. This is the more extended version made to work with the new style fuel solenoids used in Evolution Air Cooled units from 2013 to the present. This will only work with the 0J7137 Fuel Solenoid, also included in the current Cold Weather Update Kit for units with the more miniature 0F5022 solenoid.