W209 CLK 240 - Auxiliary belt change

[rich1068]

On a rainy evening a few years ago, driving north on a busy M1, the auxiliary/serpentine belt on my Saab 9-3 let go. I was on a section of not so "smart" motorway and it was quite terrifying. Because of this experience I tend to replace the belt as a matter of course on whichever clunker I'm currently enjoying. So, on my W209 it looks to be possibly the easiest change I've ever done but should I change the pulley, tensioner or both at the same time? I'm not getting any odd noises, squealing or slipping. What's the recommended course of action?

 

[Trickythemerc]

Just change everything and use decent quality parts. I did mine last year, think I used SKF stuff. I did the water pump genuine MB and alternator clutch pulley at the same time so will not be going back there anytime soon.

 

[rich1068]

Thanks for that.

Not sure I'll go that far but I've seen the Gates and SKF kits for a good price. They include belt, pulley and tensioner for about £120. Out of interest I got a price for genuine. £352