round rubber seal or gasket came with thermostat, does it go in housing on top of thermostat or behind thermostat at engine
Jan 6, 2013 at 3:36 PM
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Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
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DANNY L
AUTOMOTIVE REPAIR CONTRIBUTOR
5,648 POSTS
Hello, I'm Danny
Here is a tutorial showing how to remove and replace a thermostat.
I've attached picture steps below for your Ford truck on how to remove and replace the thermostat including the placement of the gasket- O-ring. Hope this helps and thanks for using 2CarPros.