You don’t have to choose between high performance and long life in your iridium spark plug. Bosch Iridium is engineered to deliver both. The ultra fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and platinum ground electrode help it to go the distance.

Center Electrode:

• 360º continuous laser welding to fuse the iridium firing pin promotes durability and long life
• Ultra fine wire design delivers exceptional ignitability and performance
• Copper core provides broader heat range to resist pre-ignition and fouling

Ground Electrode

• Tapered shape reduces flame shrouding for improved combustion and more power
• Laser welded iridium-platinum alloy inlay promotes durability and long life
• Copper core (when required) provides broader heat range to resist pre-ignition

Nickel-plated shell with rolled threads provides complete anti-seize and corrosion protection

Ribbed insulator design prevents misfires due to flash-over