I would get them replaced and the whole lot secured ASAP - they are cheap from a dealer I believe. I got my rad replaced at a garage ( I know it was a new car then and I looked at the big V8 and **** myself). They broke one of these and didn't bother replacing it, they also broke the plastic shroud around the rad at the bottom, they must have forced it in between the fan and rad trying to fit it and broken it i the process. The result? A few days later the shroud came off and fell straight into the fan - both were shot to ****. Lots of razor sharp plastic bits everywhere - the new rad was damaged but not leaking luckily and I escaped any serious damage anywhere - could have been a lot worse. In the end I had to shell out for a new shroud, fan and clips.