Serpentine Belt Replacement C4 Grand

[CitROeNALD]

Car: C4 Grand picasso (2018) with a 1.6 blue HDI 120 with stop/start.

The service interval for the serpentine belt appears to be 6 years. Is this correct?
The current belt is a GATES 6PK962.

My questions are:
1) Gates no longer seem to make a belt in that length. What is the go to brand citroen use?
2) Is it an easy DIY replacement?
3) I can see the top tensioner on the car but some say that the stop/start types have a second lower tensioner, but I can't seem to see this.

Regards

[GiveMeABreak]

Happy to advise you on belt change interval, for which I'll still need your VIN, but if you require parts info, please see below


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