[Inquisitive]

Hi, I’m new to working on my 2007 335i and have some questions about these lines going into the manifold.

I’ve pulled off the manifold and cleaned it , the throttle body and the intake valves (new gaskets for the manifold and throttle body too), I’m almost ready to put everything back together.

I had ordered new vacuum hoses and bought 3.5mm silicon high temp just like is recommended everywhere I could find. Now that I’m looking at it, I’m hesitant to replace these. There is a huge difference in inside diameter between the original hoses and the ones I bought. I’ve attached pictures.

Can someone please tell me what I need to do? These are vacuum lines, right? When I end up replacing the lines on the left side, will I encounter the same difference in size?

Thanks!

[Inquisitive]

No one has responded to this, so I’ll post an update on what happened

It was the hose that I ordered, it wasn’t exactly 3.5mm.

I had also ordered 10 feet of a baby blue hose, which turned out to fit much better!