Torch spark plug cross reference

Joined
Mar 2, 2004
Messages
4,101
Location
Kentucky
I have a couple pieces of power equipment that use a Torch (chinese) brand plug with a 3/4" hex. Part numbers are F7TC and F6TE, the plugs are identical other than the heat range.

I'd like to convert these to 5/8 hex to match my other OPE which use a Champion RC12YC, which is very common on small engines. Does anyone know if the RC12YC is an appropriate substitute? I can match the heat range, I just need to make sure the plug is otherwise functionally equivalent. It looks identical in in size from the threads down to the tip. If that's not the correct plug, can anyone suggest a part number (brand doesn't matter, I can x-ref) in 5/8 hex?
 
Sorry if my post was confusing. I don’t need a simple cross reference.

I need a cross reference to a plug that has a 5/8 hex, not 3/4 or 13/16, which is what the Torch plug and NGK mentioned above are.
 
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