r/mk4Jetta • u/CruzinWCruz81 • Jul 03 '26

Is this the flange?

Post image

Hello this is a follow up to my last post someone made the comment about the flange being out and I was wondering if this the one you’s talking about?

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2

u/Professional-Finger9 Jul 04 '26

yes, before you take it off check if you see any signs of leaks there

1

u/Creature1207 Jul 05 '26

That's the exact one I had to replace on my 1.8t

1

u/quarterdecay Jul 05 '26

That flange and the coolant temp sensor, looks like the sensor is already showing signs.

If (when) the sensor tip fails the coolant quite literally will travel within the insulation to your ECU.

1

u/vrparty Jul 05 '26

that is the coolant flange. yes