I'm guessing that you are talking about the large hose. The biggest problem with replacing this hose is that you will have to drain some of the coolant out. There is a radiator drain at the bottom of the radiator. It might be the hose itself leaking or it could be the gasket on the thermostat housing (this is the piece that connects to the engine). It's most likely the hose.
Friday, September 9th, 2011 AT 8:44 PM