NGK Cr9ek

I also have never found a 'spark plug wrench' that fits in all spark plug wells . As Esjohnsey says, there too darned fat. I have discovered that a standard socket from Sears, and presumably anywhere else, works just fine. I also use a special six-inch extension with a locking system so the socket cannot come off. These are available from any of the big tool companies (but not Craftsman, yet anyway). Once you have one, you really appreciate not having to fish the socket out of the plug well ever again.