NGK Laser Iridium Spark Plug Box of 4 (ILFR5B11)

When it's time to replace the spark plugs on your 2006-2010 Kia Optima, NGK Laser Iridium plugs are a solid choice. These are designed as direct OE replacements, meaning they're built to the same standards as the plugs that came with your car from the factory. They play a crucial role in how your engine runs, igniting the fuel-air mixture to create power.

What sets these NGK plugs apart is the iridium alloy used for the center electrode. Iridium is incredibly hard and has a very high melting point, which helps these plugs last much longer than standard platinum plugs. The fine wire design ensures a consistent spark, and the pure alumina silicate insulator helps manage heat effectively. Plus, the trivalent metal plating on the body helps prevent corrosion and makes them easier to remove down the road.

This set comes with four plugs, which is exactly what you'll need for your Optima's four-cylinder engine. They also feature a platinum pad on the ground electrode, which helps them wear evenly, especially in modern ignition systems. You can expect reliable starts and smooth engine operation with these well-made plugs.