What part is this? 91 Montero RS 3.0 V6

[shoppingshzhang]

I am going through some parts to order.
Anyone know what this part is?

I already found the other 3 on the thermostat housing.
Can't figure out what this one circled is.

Thanks!

 

[shoppingshzhang]

Seems like it's this?
http://www.rockauto.com/en/moreinfo.php?pk=40642&jsn=__GIP__3__

 

[IncorpoRatedX]

Pretty sure that's the AC shut off switch.

Thermal switch cuts the AC pump off if the engine temps get too high.

 

[Jeff V.]

Looks like it might be MB568959. I had to look it up in the Japanese parts catalog since all the AC stuff was missing from the US catalog.

If you pull the connector off, is the top of the sensor white?

 

[shoppingshzhang]

I will take it off and see.
Thanks!