I have a used DC sports H22 headers, It need to be replaced the middle two o-ring gaskets and down pipe gasket... Anyone can help me? I have searched a lot of website and local kragen, it's hard to find out..... the size is around 1.87in for middle, 2.25 for downpipe. Thanks. I am located in San Francisco.

 

Have you tried to contact DC? If they don't have them then I don't know who would.