Another major benefit in the use of silicone hoses is that they will not shrink ie: you will not have to retighten the hose clamps to prevent them from weeping as they age. A real big plus for the hoses behind the water pump as they cannot be reached after you install them. Thats why Rob Grady includes them in his master water pump replacment kit! Anything that you can do to upgrade the cooling system is a good idea, it is one of the weak points on the car besides most cars are still running the origional hoses. David Teitelbaum vin 10757 Yes I replaced my water pump and hoses, silicone of course!