I recently installed a home generator to provide power during outages (Kawasaki 351cc, 11 hp, single OHV 4-stroke if anyone cares) and searched out this neat siphon pump, preferring to store fuel in my car than in a tank in the garage. This pump should allow me to refuel the generator when it runs low. Note the neat feature of a squeeze bulb to provide initial vacuum to get the siphon process going. Siphoning does require that the destination is lower than the source.

Anyway, it occurred to me this might be of interest to those who like this sort of thing in their tool kit.

I paid $20.48 for 2, shipping included.

Delivery took just 3 days from my web order to my home in CA.

The pump works well. In addition to siphon action you can also have true pump action by squeezing the bulb, regardless of the relative height of the output.

I transferred 4 gallons from my 560SEL tank to a can in 3-4 minutes- using a mixture of siphon and pump action.

I replaced the hard blue output tube with 3 feet of 5/8" ID flexible vinyl tube to make the whole thing more workable.

No parts were affected by gasoline.

The path down the filler neck to the gasoline reservoir is tortuous and I doubt the 'shake to get a siphon going' action of alternate products would be easy to use given this complication with all its added friction.