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Discussion Starter · #1 ·
Our 4.0 98’ Ranger has a bad thermostat. The thermostat with the rubber o’ring gasket is easy to get. The paper gasket for the thermostat housing isn’t so easy to come by.

Do I need to replace it or does the rubber o’ring seal everything up?

If it does need to be replaced can anyone tell me how thick the original paper gasket is?

I could buy some 1/32” or 1/16” gasket material and just make one if necessary.

Thank you in advance.
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