WizPorsche944

I am looking for where this part is on my 944...

058 131 851 A- Vacuum Valve

I want to replace it while doing my vacuum lines.

Kurt R

On my VW it's on the water neck on the back/right side of the head.

On the 944 it's on the little pipe coming off the head by the #1 cylinder.

V2Rocket

on early car it is below the #4 sparkplug on the neck coming out of the head.

WizPorsche944

What is the purpose of this part ???

V2Rocket

on both cars ive replaced it on i couldnt really tell lol, looked to be just a vacuum routing piece, maybe it has some function tied to coolant but i couldnt see a hole or anything for water.

EJnMN

I've wondered what that was as mine is just broken off and not connected (the rabbit ears in the picture) to anything. I seem to run fine. What's the harm of not having that connected?

931guru

Evap emissions control

944obscene

Emissions? I'd take this ish off!!! lol just kidding.

EJnMN

Interesting. We don't do emissions testing in MN, so I don't know where I sit wrt that. If the rabbit ears are busted off, am I better off
1) Sealing it, so it is perpetually closed (?)
2) Leaving it open, so it is perpetually open (?)
3) Fixing it (I need to address oil seepage at High RPM around Air Oil separator) although not sure what I'd connect it to as there are no loose vacuum lines begging for a connection
4) Pretending I'd never noticed it was broken.

931guru

don't worry about it.

Kurt R

Yeah, I meant #4. I was looking at a head sitting on the bench and I got all turned around.

I'm not sure I've owned a car where it is hooked up properly.