Quality Reproduction Fits 1969 350-4 Barrel, 396/325 & 350hp 3/8? Outlet Tube & 1/4? Return Line 0-90 Ohm Range Includes O-Ring Seal & Filter The fuel sending unit spends its life in a very inhospitable environment and it is prone to fail. Don?t be caught on the side of the road out of gas! Many times this ground wire can be pulled loose from the sender during tank installation resulting in the fuel gauge pegging past full.