Review on NGK (1675) PFR7S8EG Spark Plug - Pack of 4: Efficient Ignition Solution for Improved Performance by Roosevelt Weaver

No I did not expect them to have protrusions as there is no such statement in the product information provided here. However, the opinions of many posters on the online forums I've read suggest otherwise. Anyway, I was very surprised that in this box of four, one connector was slightly "right" for my application at about 0.031 while the other three were at or above 0.040. I only mention it here to advise everyone to have their ripping tool ready. Otherwise there is nothing more to say about these stubs. They replace the NGKs my dealer installed 40,000 miles ago per the manufacturer's service recommendations and they have performed extremely well.