my friend striped the coolant bleeder bolt that goes into the thermostat housing when he was tightening the bolt during coolant change....

what are his options?

what is the thread pitch of the hole?

 

What year and engine?

The bleeder bolt is located on the water outlet cover, not the thermostat housing. The easiest fix may be to just replace the water outlet cover.

 

its a d16z6.. 92 to 95.. ?

 

I think the diagram answers your questions.

 

are all d series thermostat housings interchangeable?

 

Probably should replace the water outlet. Don't want to mess with your cooling system.

You could remove it and rethread for a larger bolt to plug the hole, but by then you've spent money on drills and taps and removed the thing, might as well buy a replacement part...

 

sorry i mean it is the water outlet cover

its the bleeder bolt that is up near the top coolant hose isnt this the thermostat housing

 

Is this a separate question because, again, the bleeder bolt is NOT screwed into the thermostat housing.

 

ok it is the bleeder bolt