325i vacuum hoses

[Varinn]

Replacing my brake booster and master cylinder next week, I want to confirm what vacuum hose setups are available to me.

12/89 325i, converted from auto to manual trans. Unknown make for original brake booster but as my current one is an upside down ATE with the port on the bottom corner, I'm assuming it used to be a Girling. I am installing a brand new ATE booster with the port on the top corner and an ATE 750iL master cylinder. I want to replace the vacuum hoses at least (and I have found the new hose already) but want to confirm if I have other, cheaper options for the check valve. There is a $4 version that is a simple 90* elbow, and there is the complicated version on my car that costs $85. If I get the cheap version, I will also buy the alternative intake elbow boot and plug the extra port that I see on the throttle body, on the right. What does the extra stuff do? What is the air pump and why does the check valve have two ports leading into the throttle body?

This is how RealOEM shows my car, the only difference is my booster port is on the bottom driverside corner so the hose is longer.


How mine looks now

[efficient]

going to bump this up but i was wondering if i can replace the old brake booster lines with rubber lines including the one thaat comes out from the brake booster itself?
any input?

is this safe?

[efficient]

????

[peytonracer4]

going to bump this up but i was wondering if i can replace the old brake booster lines with rubber lines including the one thaat comes out from the brake booster itself?
any input?

is this safe?

what do you mean? just general rubber lines cut to length? yes, you can do that. it's a vacuum hose with minimal bend so that should be fine if that's what you're asking.

[MR 325]

You can use non-OEM hose but make sure it's actually brake booster hose or it will collapse.

[efficient]

Thanks guys.

[Quinthirty]

Bought part number 34331158113 and hoses of similar diameter. Re-used the old air pump connector, and secured everything with stainless hose clamps.

25 year old hoses may be tough to remove from intake connections as they sort of "melt and weld" onto the manifold, but nothing that a box cutter can't handle.