Posted May 4, 200816 yr comment_246163 I got a non-EGR intake manifold installed and I now have a large hole in the side of the exhaust manifold that the EGR used to run to. I was wondering if anyone knew what size bolt or plug I can get to plug that exhaust manifold up with? Or should I just buy an aftermarket header? Link to comment https://www.classiczcars.com/forums/topic/27979-exhaust-manifold-plug-size-where-egr-used-to-go/ Share on other sites More sharing options...
May 4, 200816 yr comment_246169 IIRC it's a british pipe thread. not 100% sure though. your best bet is to find one slightly larger and tap it. Link to comment https://www.classiczcars.com/forums/topic/27979-exhaust-manifold-plug-size-where-egr-used-to-go/#findComment-246169 Share on other sites More sharing options...
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