4 x NGK Iridium IX Spark Plugs BKR8EIX Colder Heat Range 8 for Race Tuned Modifi
$49.25
NGK Iridium IX Spark Plugs (BKR8EIX x 4). Colder Plug for Models Listed. Colder Heat Range 8 Spark Plugs. Set of 4. In short, select one heat range colder for every 75-100 hp you add, or when you significantly raise compression.
