Radiator filler cap

[Whitey172]

Hi All
First post so take it easy on me.
My wife and I have recently taken ownership in a 02 clio sport.
Today however, I've noticed the rad filler cap is missing, dont ask me how or when but its missing.
Any recomendations on a replacement or should it be a off the shelf at most stockists? Any idea at sort of expected price?
Also can any damage be caused by driving it without one?

Thanks in advance

 

[powey]

Id check the filler cap for signs of head gasket going.
Could be over heating/ air lock etc

 

[Whitey172]

I think it was as simple (and stupid) as not replacing it properly after topping up.

 

[davebem]

Assuming you mean the coolant bottle cap as the radiator itself doest have a filler cap. I think from Renault you have to buy the whole bottle. Its the same one on most other clios & renault even with different engines (except some 1.2 8vs) best to try a scrap yard.