Looking for bolts of my cylinder head


Does anyone know where I could get the new originals bolts with Numbers 12 and 13 in the diagram and with manufacturercode 90012MB6003 and 90035MB6000, respectively. Please, let me know if someone could have these parts.
Thank you very much In advance image for the help!

Hi again! I would also interested in a secondhand bolts above mentioned bolts if they are in good conditions to be used. Thank you very much! cheers

eBay listing

A couple hits.