YOHOMEFuel Transfer Pump DC 12V Heavy-duty Cast Iron Explosion-proof Gasoline Transfer Pump, 15GPM, Overheating Protection, Built-in Bypass Gasoline Pump Applicable To Gasoline, Diesel, Kerosene

The pump is great. I used it to defuel may aircraft of 100LL. The threads are straight, (not tapered NPT). The fittings they send are also straight threads with O-Rings. but the O-Ring and the cavity it fits in on the pump are of a larger diameter than the fitting.I only gave 4 stars because I don't have any other pump to compare it to. As for Longevity, I've only had it a short time.

Had to defuel my 34 gallon boat fuel tank, because of water intrusion. Pumped about 22 gallons out of the tank and into a 55 gallon drum. At one point, I stopped the transfer because I saw no bubbles to indicate fuel was flowing - it WAS flowing. All fuel was transferred within several minutes - I wish I had timed it. I especially appreciate the inclusion of a ground wire to make sure no static electricity built up in any of the components. Only problem was finding 1" ID hoses, but I ordered those off Amazon. Make sure you connect the ground wire connected to the pump to a separate ground point. The instructions do no mention this.

Great machine hooked it up where the old one was and it’s fine. Wish I’d done it sooner.

I don't know why people even try to sell things that don't work I understand things happen but this is just over and over and over with stuff that I've been buying lately the amount of time spent trying to diagnose garbage that doesn't work in the first place I could have bought a much higher quality for three times the price versus my labor in other words this pump is garbage

I been using this pump to transfer E85 to my race car for a few months now. It has help up great and pumps fast