what is the size of the thread for a spark plug on a peugeot 205 1.9 GTi 1991?

Q:

A: 14 x 1.25 That is the official measurement of the 14 millimeter diameter and the thread count. 14 x 1.25 I took a spark plug that fits my 1.9 liter fuel injected Peugeot engine, the same as a 205 GTi, to the mechanic. Champion RC7YCC. He measured the thread size for me, there are many sizes if you wish to TAP a new hole. But your 205 spark plug is 14 x 1.25...... good luck.

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