Proflow E85 Flex Fuel Sensor, 3/8'' Push on Barb, w/Plug
 
This E85 flex fuel sensor measures the exact amount of ethanol passing through your fuel system into your engine, so your ECU can calibrate and vary ignition timing, boost levels and fuel injection duty cycles. It is a universal fitment with 3/8" barbs on both ends. Includes plugs and pins, Replaces GM #13507129.