Check out these hose clamps

[Smitty]

I use these Powergrips on my vehicles with the silicone hoses. They work great except that they must be destroyed to remove the hose. These or the spring-loaded hose clamps seem to work the best on the silicone hoses. Regular hose clamps seem to work loose when it gets cold after a long spell of hot weather.

 

[fortcollinsram]

you can get them at Napa IIRC...There are in the Napa Belts and Hose book in the front... I will check tomorrow if I go to work...I may still be stuck because of the blizzard..