NGK Laser Iridium Spark Plug Box of 4 (SILZKR7E9G)

This product includes a box of four NGK Laser Iridium spark plugs, part number SILZKR7E9G. These are designed as direct replacements for your vehicle's original spark plugs, ensuring you get the right part for optimal engine performance. They feature a fine wire center electrode made from an iridium alloy, which has an extremely high melting point and is six times harder than platinum, offering excellent durability and a stable spark. The pure alumina silicate ceramic insulator helps with heat transfer, while the trivalent metal plating on the exterior provides resistance to corrosion and seizing. These plugs are built to handle the demands of modern engines, offering a reliable and consistent spark for better ignitability and longevity.

The design includes a platinum fine wire tip on the ground electrode, which helps ensure even wear, especially in distributorless ignition systems, and contributes to improved spark performance. NGK uses a 98 percent pure copper core within the insulator to help dissipate heat, preventing the spark plug from overheating and ensuring reliable starts. The triple seals are incorporated to prevent any leakage. These are recommended for vehicles that originally came with OE iridium alloy spark plugs, like your 2015 Hyundai Sonata.