Silicone heater hose

They have silicone clamps that look just like a regular clamp, but have another piece of metal covering the "threads" on the clamp, so that the threaded parts of the clamp don't chew up the hose.

Hope that made sense, im not sure what to call the part of the band that has the holes in it the screw would grip.

I've used normal clamps for most of my work and haven't noticed anything I wasn't expecting.

 

You just have to be careful that you don't over tighten them with regular clamps. I prefer the constant torque style clamps, they don't have the occasional cold water leak issues. The heat shrink power grip clamps are really nice for things like heater hoses. They work good on everything, but suck to get off and are not reusable, so we don't use them on anything that has to be taken off to do common things. The top radiator hose has to come off to get the valve cover off, so we don't use them there.

Keep in mind that silicone allows water to escape very slowly, not antifreeze, just water. It's called water permeation. It's not uncommon to lose a few gallons per year. Nothing to be concerned with, you just might have to top it off every few months. However, it makes testing coolant even more important. If you add antifreeze, your antifreeze will slowly become more concentrated, because only water permeates through the hose. This also shouldn't be an issue if you test your coolant at regular intervals. Just a tidbit that many don't realize. IMO, silicone hose is still a better choice than rubber hose for the extreme temperature differences hoses go through.