Which alternator pulley?

[aneesh84]

I need a new pulley for my alternator. C5 2005, 2.0 HDI 16v 136

VF7**************[VIN obfuscated, can be read by forum staff]

I am confused between the two Valeo parts to order.

588002 vs 588003

The latter has a smaller width.

https://www.autopecasstore.pt/loja-de-p ... rand-valeo

Any ideas?

[RichardW]

It's not listed separately by Citroen. You would need to get the old one off and measure it I suspect.

[aneesh84]

From what i see it will only move the belt position to left or right by 2-3 mm. Does that really matter?