Vacuum Hose Replacement (328i)

[seanswn]

Hi Everyone,Had any of you replaced all the Vacuum Hose with Silicon hose on your engine? I believed the old hose is mostly cracked and leaky.If yes, can you share what is the diameter require for this exercise as the common size is 4mm, 6mm and 8mm, what size do our M52 engine used?Thank you,Regards

 

[John_Smith]

I did change this hose (part # 13901436306) but I was using the normal rubber hose....