Quick view NGK NGK Iridium Stock Heat Spark Plug Box of 4 (LZTR5AIX-13) - 2314 Compare $42.00 $41.99 NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered... Add to Cart Add to Cart
