I changed my left side valve cover gasket on my 03, 2.5. In the process I created a gusher of a leak in my engine coolant system - I've located it - but don't know what part to order. After searching my JTIS and old posts I've come up with this much from another thread:

On the pulley side of the engine at the top you will find a small hose that runs along the firewall and attaches to the coolant rail on a small nipple. Remove the clamp by sliding it down the hose, remove the hose from the nipple being careful to support the aluminum housing it is attached to. That housing with the large hose is sealed by an o-ring and a small single bolt and excessive stress can cause a leak.

Does anyone know the O-Ring size or aluminum housing name? That's the cause.

Can anyone help?