Overview Reviews Product Description Ultimate Performance • Fine Iridium tip ensures high durability • Built for today's high performance engines • Ultimate design, technology and performance Click for application guide Product Videos Product Reviews Write a Review Write a Review × NGK IRIDIUM IX SPARK PLUG IFR8H11 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *