I have a Feb 2009 Focus 1.8 HE petrol on a 58 reg 34k miles. The aux belt is squeaking when cold so Im intending to swap the belt. 

 

Can anyone tell me if this would be a finis part no 1517566 or has it been superseded as mentioned here:

 

http://www.ebay.co.uk/itm/FORD-1-8i-2-0i-08-10MY-PETROL-AUXILLARY-V-BELT-1249MM-1517566-SUFFOLK-SAAB-LTD-/330860516168

 

I have read on forums in the US Good Year Gatorback belts are a good cure but should it be a newer stretchy type? My own research suggests the correct one would be 6PK1250.

 

Any thoughts?

personally ide just get a ford one from the parts dept its not unusual to get a small squeek when its cold i wouldnt say it was worth changing at 34k