Does anyone know the part # or a place I can purchase one of these block half O-rings, or have one they would sell me.  I have all the other gaskets to do an overhaul, and don't want to buy a complete gasket set to get one o-ring and I don't want to put the cases back together without a new one.  Thank's.

 

I might have a spare one, if it's what I think you are looking for.

DaveT,  I would love to get one from you.  I don't know what it look's like because I havn't split block yet.  It's the one that goes between block halves that is a water passage from one side to other.    If it is what I need,  would be glad to pay you what you think it's worth.  Thank,s  Monte

DaveT,  I ran into a friend that used to work for Subaru and he had a batch of of old gaskets and gave me an red o-ring about 1/2" wide-- 2" long and probably 3/32" thick.  having never seen the engine apart,  I hope it is the right one.

That's the one I was thinking it might be. I do have an extra one, but it sounds like you got it. I'd have to do some checking in the fsm, etc to be 100% on it.