I just purchased a set of Hermoff 6123 and 6124 manifolds for my 1994 Chevy truck. These manifolds have a hole for a AIR emission device which my truck does not use. What do I use to plug these holes on my application? My local autoparts store where I purchased these items was unable to provide me with anything that would fit. Thanks for your help.
exhaust manifold help please
Sep 15, 2004
2 Replies
If the holes are threaded just go to your local hardware store and see ifthey have pipe plugs that will fit.
it was a 22mm metric with 1.5 thread pitch - who knew?
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