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Bruce Lancaster · 06-18-2014, 04:08 PM

That is the correct number, should be 1 1/8" open end for plug with 11/16" head nut at other end. "Too small" is strange...1 1/8 is I believe biggest plug hex Ford ever used.

What size does it measure?? What do the plugs measure?

06-18-2014, 04:08 PM	#8
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: original spark plug wrench That is the correct number, should be 1 1/8" open end for plug with 11/16" head nut at other end. "Too small" is strange...1 1/8 is I believe biggest plug hex Ford ever used. What size does it measure?? What do the plugs measure?