Review on 🔥 Motorcraft Platinum SP546 (SP515) HT15 Spark Plugs - Set of 8 for Ford 5.4L - Genuine OEM by Richard Turner

I bought this kit and installed it on November 1st 2020 with a new KS kit. Fast forward to last week (September 23, 2021) and I'm getting misfire #5. I think I still had my old coil packs so I swapped them out. Still getting misfires. So I pull the plug and sure enough, THE TOP IS GONE! This is unacceptable. Think you buy genuine OEM spark plugs and they last less than 9,000 miles? I'm at a loss. Like many other 1 star reviews with the same issue, I think these are either fakes or something is seriously wrong. There must be a reason they are the cheapest (although not by much). what to do what to do I'll take the rest with me to check on the weekend. I bought new spark plugs from a thief because I think it's a safer game than this one. What a disappointment!