I use Mr. Gasket 42s pumps on my tractors. I've heard, and they look, like identical pumps but considering that the Mr. Gasket pump is about twice the cost I was curious so I did a few minutes of research before I wrote this. They are NOT the same. So......my glowing report on the Mr. Gasket can be ignored. That being said, I wouldn't hesitate to try a Carbole because of their price point. They do go 'whirrrrr' when running and not 'thumpy, thumpy' like the cheapies. I tried those and had an over 50% failure rate. I try to find a spot near the tank to mount them as it's easier to push the fuel than to suck it.