What is this on the thermostat? (1 Viewer)

MadMace

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Jan 13, 2018
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San Antonio
I am in the process of changing out the coolant on my FJ60. I ordered an OEM 190 degree replacement thermostat to swap in. I have only bought thermostats for my FJ40 previously and it didn’t have this piece in it.

What is this piece in the picture below, what does it do?

Also, does the thermostat do better in a particular orientation vs another—ie which part of the thermostat is facing forward?

F3954D4C-C054-451C-9989-00363DBEB321.jpeg
 
Joined
Jan 11, 2008
Messages
1,073
Location
Seattle
I am in the process of changing out the coolant on my FJ60. I ordered an OEM 190 degree replacement thermostat to swap in. I have only bought thermostats for my FJ40 previously and it didn’t have this piece in it.

What is this piece in the picture below, what does it do?

Also, does the thermostat do better in a particular orientation vs another—ie which part of the thermostat is facing forward?

You know I don't know I've seen it before but it is what it is.
 

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