Looks like it has been over torqued, a common problem.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
Over-torqued maybe? If I remember correctly, the LN plug is aluminum and only gets torqued to 19 ftlbs and the factory plug is at 37 ftlbs. You removed the crush washer before the pic?
Over-torqued maybe? If I remember correctly, the LN plug is aluminum and only gets torqued to 19 ftlbs and the factory plug is at 37 ftlbs. You removed the crush washer before the pic?
Yes, I always use a new washer. I removed it prior to taking the picture.
I had two stock plugs available (and a new washer) so I installed one of the stock plugs to keep me on-the-road.