Originally Posted by Meotch08
So I'm dumb and lost the upper thermostat housing bolt while working on my 99 Cherokee. Can't seem to find what size bolt I need to replace it with. Can anyone point me in the right direction?
Probably on my site - www.kelleyswip.com/tech.html
, follow the links.
On the 6-242, I know those screws are both threaded 5/16"-18. For the length, measure the thickness of the boss and add 5/16" to that - get that length. If it's between sizes, get the next one LONGER. May as well replace both while you're about it.
If you can, get brass, bronze, or stainless (CRES.) If you cannot, SAE5 is fine - just coat the screw with RTV before you put it in, to keep it from rusting again.