# Thermostat housing o-ring

**URL:** <https://community.cartalk.com/t/thermostat-housing-o-ring/125567>\
**Category:** Maintenance/Repairs\
**Created:** [September 24, 2018, 12:41am UTC](https://community.cartalk.com/t/thermostat-housing-o-ring/125567 "2018-09-24T00:41:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![scj](https://avatars.discourse-cdn.com/v4/letter/s/bc79bd/32.png) [@scj](https://community.cartalk.com/u/scj)\
**Post date:** [September 24, 2018, 12:41am UTC](https://community.cartalk.com/t/thermostat-housing-o-ring/125567/1 "2018-09-24T00:41:13Z")

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I just put in a new thermostat into a 1999 Ford Explorer. No problems but radiator fluid is now leaking from the seam in the housing.

I had a new o-ring with the new thermostat. Is there supposed to be a separate o-ring or gasket that is supposed to be in the housing itself? I didn’t notice one when it was off.

Thanks