What is the little round blue and black plastic thing that's attached to my vacuum lines near the firewall? It may be only on turbos, I don't know. It's under an inch in diameter and whatever it is, mine is broken and I want a new one . Anyone have the part number, I couldn't find it in the PET.

 

It's the brake booster check valve.
Mine brock once too, sorry no PN with me, but I do know it costs $40.

 

Where did you get it from?

 

Bump, a part number would be very helpful if anyone knows it.

 

477 611 933 A for NA
191 611 933 F for Turbo

Hope that helps

 

It helps tremendously, thanks dude!

 

I think Travis has the right number.
I'll double check later tonight when I look at my service records.
They're available at the dealership, and 99% of the time you have to order it from another dealership or Germany.

 

I had to order one a couple months back and Paragon had both part numbers instock (AC and non-AC)

 

If its just a check valve... for $40 cant you make something up. Don't they sell little check valves down at homedepot?

Just and idea...

 

Crossed my mind, but I'm doing so many repairs right now (replaced cracked headers, oil cooler seals, new vac lines, etc, plus a ton of upgrades *points to sig*)what difference does another $40 make?

 

191 xxx xxx sure looks like a VW part no...
Might want to check there: probably stock, most probably cheaper....
$40 for a plastic valve????? Industrial quality stainless check valves are cheaper.
Someone got over-charged? or ripped????
TakeCare

 

Part Number: 477 611 933 A

check valve - a/c equipPed cars; 944 1983-91, 924S 1986-88

Cost : $20 at dealer so expect $15 from specialists.

 

All those numbers are incorrect.
The correct number is 928.537.361.02
It's a black/blue cylindrical check valve with a nipple on the top that's known to break.
And it doesn't cost $40 or $20, it cost exactly $30.84

 

Thanks Cyrus, that's the part. Looks like I'm racking up abunch of spare bits.

 

Are we talking about the check valve that fits into the front of the brake booster? I just installed that part a couple months ago (early June actually). I replaced it with the version for the 951, which is also the version for non-AC cars. The part number was 191.611.933 F just as Travis listed. And it cost $9.63 from Paragon.