NGK Iridium Spark Plug

When it's time to replace the spark plugs on your BMW or Rolls-Royce, especially if you're looking to maintain original performance, NGK's Laser Iridium plugs are a solid choice. These are designed to be direct OE replacements, meaning they're built to the same standards as the plugs that came on your vehicle from the factory. They use an iridium-tipped center electrode, which is significantly harder than platinum, offering great durability and a consistent spark. This helps ensure reliable starts and smooth running.

Beyond the iridium center electrode, these plugs also feature a platinum pad or fine wire tip on the ground electrode. This updated design helps them wear evenly, especially in modern distributorless ignition systems, and contributes to a more stable spark. The pure alumina silicate ceramic insulator is strong and transfers heat well, while the trivalent metal plating on the exterior helps prevent corrosion and seizing, making them easier to remove next time. The copper core inside also plays a role in managing heat, keeping the plug from overheating.

These NGK Laser Iridium plugs fit a wide range of BMW models like the 550i, 750i, and X5, as well as the Rolls-Royce Ghost. They are a well-built option for anyone looking to restore their engine's original ignition performance and ensure long-term reliability.