(New Surplus) 18MM longreach, shielded, 3/4-20 barrel. FAA approved for Continental IO-470, GIO-470, TSIO-470, IO-520 and GTSIO-520.
Not for 0-470, which uses short reach plugs.
I have been using these plugs for over 2 years. Work great, but did have 1 that was DOA. I guess that would be expected considering they were made in 1960. At this price, I replace the plugs every annual instead of cleaning.
Very Good Item, good value and fast delivery.
5 stars for easy ordering, and delivery as promised. We had some of these that had been here for maybe 25 years. Decided to use them. Normal life and performance, which is my main reason for ordering them. Glad they were in your catalog. Our IA recognizes them as a no problem plug.
Very good plug
Yes, these plugs come with a copper spark plug gasket.
These are massive spark plugs.
They do not have a cross reference to a FAA Approved plug.