Are you still spending over $20 each for spark plugs for your
Continental 470/520 Engine? Does your engine call for an RHB32E plug? Did you know that a Military Surplus spark plug is STC'd
(SE69WE) for many Continental Engines at something less than half the cost of
Champion or Unison options? It is the
Note that the 520B and 550B/BB Engines are not
listed in the STC documentation, but they do call for the RHB32E plug......You
and your mechanic decide!
Check the Champion Application Listing Catalog