I haveblown the gasket on my OBX header countless times and each time i have to cut my own out and its getting really annoying... i remember seeing a thread a long time ago about a copper type gasket from like jegs.com or something but i cant remember where it was and what the dimensions were... its the gasket where the 2 pieces of the header connect and go from 4 tubes to 2... if anyone knows where to get this part and had the same problem as me hook me up please....

 

Check out the post I started. Its how I fixed my headers from leaking in the same spot and has held up perfectly.
https://www.hondaaccordforum.com/m_58752/tm.htm

I think I am going to have to do it where the header flange meets the engine pretty soon. Lemme know if you have ?'s.