Please can you advise on cost and availibility of spares of Saab9-3

We would have no idea in the u.S that would be around $2500 u.S. Put that against your currency exchange to figure it out.

Did u over heat the engine, if yes, did u already remove head from car, for your mechanic to tell u that u need a cylinder head, note the water pump is driven by the engine balance shaft chain & if the coolant ran low the info would have come up on your display screen, did he check if both engine cooling fan are working & if the engine coolant thermostat is good, best tto send cyl head to machine shop to have them pressure test head for cracks & warpage, cause I have done a lot of them that have ran hot till the car just come to a stop engine jammed cause of the heat & the head most of the time comes back good, & there is other time that it is just a thermostat with no head gasket replaced, so check it out really good, is your mechanic familiar with saabs.

But if u do need the part contact this place goldwing saab. Com they ship worldwide.