If these NGK plugs are recommended by the OEM it is best to use them
The car is a 1990 model, used as a second car. These NGK plugs are specified by the manufacturer. A couple of years ago I fitted what I was told was an equivalent. After a year or so the car became unreliable when starting, especially with a hot engine. It gradually became worse. Other reasons were suspected but once the OEM recommended plugs were substituted the problem was resolved.
Lawn mower engine was stuttering, misfiring and then stalling. This O.E. plug change on my Honda cured the problem and it is running as good as new egain.