Brand New - Exact-Fit - Upgrade

Laser Welded Iridium Tip

Colder Plug for Models Listed

   Heat Range: 8 / Factory Gap .03" (0.8mm)

Fine Wire Iridium 0.6mm Electrode

The package includes

4 spark plugs

Fine Iridium tip ensures high durability and a consistently stable spark

Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines

Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties

Outstanding acceleration, high fuel efficiency and durability

Ultimate design, technology and performance.

With modified engines (those engines that have increased their compression) more heat is a by-product of the added power that normally comes with increased compression. In short, select one heat range colder for every 75-100 hp you add, or when you significantly raise compression. Also remember to retard the timing a little and to increase fuel enrichment and octane. These tips are critical when adding forced induction (turbos, superchargers or nitrous kits), and failure to address ALL of these areas will virtually guarantee engine damage.

BKR8EIX is two steps "colder" than BKR6EIX and Gap is .03" (0.8mm)

If your vehicle requires 6 heat range, these will be two steps colder.