F SANE IL

I think I found/have another coolant leak.

Definitely not the Y-pipe, but some return line going into the thermostat housing. Looks like probably the gasket/o-ring probably bad, but I can't figure out which o-ring this is or what part number it is.

It's the seal on pipe #4

Actually thinking this is a simple o-ring that can be had at any auto store. Just want to make sure the correct size.

Anyone familiar with this one?

jaustin

Sent ya a pm

jaustin

and I told ya to change that part!

F SANE IL

Ha, maybe. I didn't see. Is it just an orange or entire pipe?

F SANE IL

Ignore this post, just checked and see the O ring

F SANE IL

Found it!

Porsche 999 707 477 40, Engine Coolant Pipe O-Ring https://a.co/d/6chpEa4

twodollardoug

There's two of them. One for each head.

jaustin

^ I dont think so

F SANE IL

I believe you're talking about the other pipe. The one that goes from the T-stat to the I think. This one..
https://www.fcpeuro.com/products/por...he-94810606921


The one I need o-ring for is this one. It comes from the right side of the T-stat, then goes out to a rubber coolant line.

I ordered one from Amazon, sold by Porsche.

Porsche 999 707 477 40, Engine Coolant Pipe O-Ring https://a.co/d/dWfQ4uy


Also, after looking around... this oring I'm pretty sure is just a standard 19x3mm O-ring. Another thing, got a feeling I need to start replacing all the o-rings and seals all over the place before she starts to **** from every orphice. When I got this thing in 2018, engine bay was spotless, no leaks anywhere.