Pulley grooves and V ribbed belt

[amosalamy]

Dear All,can you please advise

I have Skoda Fabia 2003 AME 6Y3 1.4 8V MPI without A/C.

I bought a used bracket (the one with tensioner to fix both alternator and compressor to the engine) and a used compressor denso for it.

I want to install this to my car but I am confused for the following:

My old V ribbed belt was 5PK1215.

But I got the size of the new one as 6PK1750

My question is should I change the pulley for water pump,alternator,crank shaft to be able to fit the new size 6PK1750 or the belt should fit to my original pulleys and no change.

[sepulchrave]

Count the grooves, if there are 6 then it will fit just fine, a 5 rib belt will fit on a 6 groove pulley but a 6 rib belt will not fit a 5 groove pulley. You could get a 5PK1750 instead if you have problems.

[amosalamy]

Anybody has a photo for 6 grooves pulley and 5 grooves one.