I have 30 used RHB32E Champion spark plugs which have been refurbished by Aircraft Spark Plug Service of Van Nuys. They check them thoroughly, re-paint them, add new copper gaskets,
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and seal them in plastic. These were removed from IO-520s in a Baron for upgrade to fine wire and have less than 200 hrs use.
Reply here on BT or text Russ at 408 six five five 7305
