G37 Coupe

Help - Thermostat

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Old Mar 21, 2026 | 02:40 PM
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Help - Thermostat


helping a friend do a low temp install Z1 thermostat

He has a 2008G37 coupe sport Manual, trans

There’s also a long tube that came out with two black orings on the end of each of it. Everything came out dry since we already drained the coolant, but not what I was expecting at all for install.


Did the G37 coupes get a different style thermostat?

Last edited by shawnberry45; Mar 21, 2026 at 03:41 PM.
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Old Mar 21, 2026 | 03:52 PM
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I, LITERALLY, just finished replacing the thermostat this morning (post)
Those are two entirely different parts:


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Old Mar 21, 2026 | 04:22 PM
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yep, just figured it out for some reason. I thought the thermostat was up top but it’s by the bottom hose live and learn I guess lol

Originally Posted by ILM-NC G37S
I, LITERALLY, just finished replacing the thermostat this morning (post)
Those are two entirely different parts:
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Old Mar 21, 2026 | 04:26 PM
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ILM-NC G37S
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Pack your patience. It is a royal PITA job.
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Old Mar 21, 2026 | 09:36 PM
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Originally Posted by ILM-NC G37S
Pack your patience. It is a royal PITA job.
Not really. Helps if you have not too big hands and a electric rachet.
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Old Mar 22, 2026 | 10:34 AM
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It was no cake walk in Covent Garden that much I can attest.

It's all relative, though. The job is done and will likely outlive me.
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