Serpentine belt length E86 N52

[Dark Diggler]

Anyone know which length serpentine belt I need for a SI coupe?
This is the arrangement my engine has

EC59B2EF-61AE-4212-8C2B-62B2D59FE8AA.png (189.56 KiB) Viewed 425 times

Reolm seems to think my car has an extra pulley which it doesn’t and looking in Autodoc, the kits they offer have an extra pulley and what seems a long belt ??
https://www.realoem.com/bmw/enUS/showpa ... Id=11_3740

If anyone has done the job on their coupe lately maybe they can find the part number or length for me?

Thanks in advance

[E86]

In the RealOEM diagram, the reference number for the extra pulley is blanked out and doesn't appear in the parts list beneath, meaning it isn't fitted. So I think the parts list is probably correct but the diagram is misleading. Hopefully the RealOEM spec for the V belt is correct?

11287628651
6PK 1827

Maybe someone who has done the job can confirm? Let us know how you get on

[Scooba_Steve]

I did the oil filter gaskets last year, alternator swap while there and a new belt+ tensioner etc.

I used Dayco 6 Rib Multi V Drive Belt 6PK1830
I think that was the closest I could find. Doubt them 3 mil will make much of a difference!

[Dark Diggler]

That's eased my confuzzled mind, thank you both for your help