NGK Iridium IX Spark Plug Box of 4 (LKAR8CIX-PS)

The fine-tipped iridium center electrode on these NGK Iridium IX spark plugs is a key design choice that matters for your engine's performance. This advanced material allows for a more concentrated spark, which helps with igniting the fuel-air mixture more effectively. This can lead to a smoother idle and better overall combustion efficiency.

NGK uses iridium for its extreme durability and high melting point, meaning this center electrode can be made much finer than traditional platinum or copper plugs. This finer tip requires less voltage to jump the gap, making it easier for your ignition system to produce a strong spark, especially under demanding conditions. The ground electrode also features a platinum pad for added durability and consistent performance over its lifespan.

This box contains four spark plugs, which is a common quantity for many 4-cylinder engines. When you're replacing your spark plugs, it's a good idea to check your vehicle's service manual for the correct gap setting and torque specifications to ensure proper installation.