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I'm trying to source some copper Motorcraft spark plugs...part number is AZFS22C-F4 (the F4 means pack of four). Unfortunately apparently they're only available in America readily. Have these had a part number change in the last couple of years, or just discontinued, or just MURICA supply chain unavailability?
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Try phoning the Green Spark Plug Company - they were very helpful when I was looking for an obscure motorbike plug.
http://www.gsparkplug.com/contacts
Although your part isn't listed on their site, they might be able answer your question or suggest an alternative? -
AZFS22C finis is 3966269. It is a special order part through Ford from the US. All Ford dealers can source US parts but I think most parts counters can't be bothered to do it.
Might be worth trying http://www.finisfinder.co.uk
What car are they for? Why not use NGK plugs?
What is that you are after?