Dephaser pulley interval?

Looking at a 11 plate 200 tomorrow from a dealer.
Cambelt, aux and Waterpump change in 2017 but no history of Dephaser pulley.

When should this be done?
Should I ask for money off? If so, how much?

Thanks chaps
 
It shouldn’t need replacing as they’re not a common fault to fail, people usually get them done as piece of mind when the cambelt is being done. Usually same time as you do the water pump.

Not sure but if you want to change it you may have to do the cam belt again??

Hope this helps
 
Change it every time you do the cam belt job they can get clicky before the next timing belt change that's why Renault recommend them done at timing belt time along with the water pump.