I've got a focus tdci 52 plate with a slight leak of coolant coming from a plastic hose fitting bolted to the engine block with 3 bolts in a triangle shape.

The plastic fitting is located by the dip stick it has a single large diameter hose coming out of it in a downwards direction at 45 degrees.

Sorry for my poor discription but, My question is does anyone know what the fitting is.

hi, from what you have described it sounds like it is the thermostate housing. the parts are not to expensive but can be a bit tricky to fit

i think your right it is the thermostat housing. Going the try some Bars Leak stopper first. Then maybe a local garage

leak stopper worked for about 3 months but it's started losting water again.....

I've now got a thermostat housing from a local breakers cost £10 so i'm going to have a go over christmas.

I assume there is a gasket that goes between the engine and the housing?