Water temp sensors

[PARADOX]

Need to get two water temp sensors for Gaffrig water temp gauges.
Any body has a couple? or source with reasonable $'s ?
THx
P

 

[Sacred Ground]

This may help-$200 for both

 

[PARADOX]

This may help-$200 for both

Thanks.
They look like a thermostat fitting. I just need the sensors. I'm trying to monitor the tailpipe temperature.
P