Hi
My engine builders have managed to put my engine together, taking out this part, and returning it and the new one to me.

In the list of parts from the full gasket kit, the part's name is Tri-angle O-ring 50mm.

What is it and where does it go?




Thankful for any and all your help!

 

Looks like one of the stock header gaskets that goes between the two pieces. If you aren't running a stock header then throw it away.

 

yea exhaust

 

That is if the car had a single port A pipe.