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  1. F

    Dorman thermostat housing o ring leak fix. Help!!!

    I ended up buying a new sensor and it finally fixed the leak. My housing came with 2 o rings neither of which fit properly. I had to buy a thin 9mm o ring to supplement the one that was installed already on the plug to get a good seal. The o ring for the temp senso I had was flattened I'm...
  2. F

    Dorman thermostat housing o ring leak fix. Help!!!

    I had the sensor fully seated and I believe the o ring may be the wrong size. I read a lot of reviews on advanced auto.com where I purchased the part.
  3. F

    Dorman thermostat housing o ring leak fix. Help!!!

    So I replaced my thermostat housing unit today with the dorman aftermarket kit and the o ring in the extra port is leaking badly. I've seen this is a common problem through research but nobody lists the fix. I have tried both o rings that came with the kit to no avail. It is only leaking from...
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