What size bolt to plug bung on cat?
I'm sick of my CEL for my Cat (#67) so I'm going to try wrapping my O2 sensor in foil, but I was curious if anyone knows what bolt size I need to fit into the existing bung? Basically, I need to plug up the old hole where my O2 sensor once was. Thanks.
Same size as a large spark plug, not the same as Honda size. If you go to the parts store, and grab some Honda ones, and then look for ones that are bigger (ones that need a 13/16" socket), this is the size that fits O2 sensor bung.
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impr323
Honda Civic / Del Sol (1992 - 2000)
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Nov 13, 2005 10:17 AM





