Chrome O-ring Water Neck (Thermostat Housing)

OK Eric, understood.

Here's my take on the chrome housings. I have ran 3 of them and the first one leaked within 500 miles. After I took it off I noticed the O-ring they sent with it was not the right size. It was too narrow and when tightened down and heat cycled a few times it flattened out completely loosing it's seal. I found an o-ring that actually fit the o-ring groove properly and put it on and never had any more problems. On the other 2 I used I inspected them before ever installing them and installed a O-ring that fit the groove and never had any sealing problems with either of them even after taking them apart and putting them back together a few times. The only negative other than that was how the chrome doesn't stay on them good. The last one I just took off my car had less than 5000 miles on it and the chrome was already checked. I like stuff to look nice and work good so I now use only billet housings with the correct O-ring but IMHO there's no reason a chrome housing won't work good (if it's the proper housing) and last a good long life if installed properly which means using the correctly sized O-ring and not over tightening it.