Review on 🚀 Iridium Spark Plug Upgrade Kit for Ford F-150 F-250 F350 5.4L - Henbrs PZH14F SP-515 Performance Pack of 8 by Brad Bryant

So far so good considering my truck has clocked up almost 230,000 miles and the first owner never bothered to change the spark plug so I was surprised that the Truck actually still works, but after installing spark plugs and coils and all that good stuff, like it should have been done a long time ago, the spark plugs work great, everything is back to how it should be. Great price on good spark plugs and I will buy the same next time I need to change spark plugs and now it won't be 230,000 miles when they are replaced. I was blown away, the previous owner never changed spark plugs!