Just a quick question, when did they change the color from yellow to black?
M14x1.5 is a pretty common tap size since I think some oil pans are that size. Worst case they make helicoils and other inserts but that would really be a last resort option if you screw things up. I ordered a new M14x1.5 tap from Amazon and I'll have to use it at some point to fix my driver's side rear hole. I have about a 1/4" shim (washer) in place right now that is exactly 14mm and don't want to leave it like that too long.
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