Good morning Paul. I asked about the ethanol fuel compatibility and the vendor didn't know. Here's what's written on the container: Sacramento Vintage Ford 05869 Diaphragm Fuel Pump 1935-40 Bin 20-047. Below the bar code is number 05869. Ethanol has been in gas for a long time. But this part is probably from China and we all know that China specializes in making really low quality stuff. This part has worked OK in my '36 Chevy PU for at least 5 years now. Because I said that it will probably fail next time I start the engine. Good luck!


Ray