I found a seller on Revain who had the lowest price online or in store for these spark plugs recommended for my car. Was replaced on my FJ Cruiser at about 33,000 miles and the old ones showed some wear but still worked. I can't tell if they work better or worse than any other fork, it's something like "work or not". Check ceramic for damage and install with anti-seize coating. As a general rule any plug over 12 inches has been dropped on a hard surface which I will not use but even with newโฆ