I used these in my '96 Lexus LS400 which still looks like new. I bought the car with 72,000 miles and among other things installed new Denso PK20R11 at that time. I just changed them with 217,800 miles! 145,000 miles without a miss--couldn't be happier and I also bought a set for my wife's Lexus SC400. Be sure you have the proper gap information--it is all over the board. GOOD SPARKING!