This is for a new 1965 1966 1967 Chevrolet Impala, Bel Air, Biscayne gas tank sender. It comes with the 5/16 fuel line size. It fits hardtop, sedan and convertibles. This will NOT work on a station wagon. This is a 0-90 ohm sender. It includes a new sock filter and rubber o-ring. This is a tested unit by us. We have had way too much trouble with cheap sending units not working right out the box, defective flare fittings and loose filters. Nobody wants to change this smelly and messy part twice. We don't even carry the cheap ones anymore. So we now get our sending units from a different source then what everybody else sells on Ebay and they cost a little more money. We test ours before we ship with an ohm gauge and write the actual empty and full ohm reading on the box. We also make sure the sending unit is calibrated properly. We know it works and you know it works before you put it in. SKU# 20620