Nissan primastar van (new pulley needed)

Hi all



I have a Nissan primastar van 1.9l year 05(Renault engine)



There is 6 pulleys ,I need the bottom right one . I think it's just a idler pulley as it's just bolted straight on to the engine block. It broke while driving so all I have left is the bolt really . Problem is I bought a new one but the hole in the pulley is too big for the original bolt so it must be the wrong one but every dealers and suppliers are telling me it's the one I need but it's not. So would anyone know any info on this. It would be much appreciated.

Thanks ozzie