NGK Laser Iridium Spark Plug Box of 4 (SILFR6B8)

This product is a box of four NGK Laser Iridium spark plugs, part number SILFR6B8. These are designed as direct OE replacements, meaning they match what your Subaru Legacy came with from the factory. They feature a fine wire iridium center electrode and a platinum-tipped ground electrode, which work together to ensure a consistent, stable spark for reliable starting and improved engine performance.

The construction of these NGK plugs includes a pure alumina silicate ceramic insulator that helps with heat transfer and provides strength, while the trivalent metal plating on the exterior helps prevent corrosion and seizing. The iridium alloy used in the center electrode has a very high melting point, making it durable for today's engines. The platinum pad on the ground electrode helps with even wear, especially in distributorless ignition systems.

NGK also incorporates a copper core within the insulator to help dissipate heat away from the plug, preventing overheating. These plugs are sealed with triple seals to prevent any leakage. If you're looking to replace your spark plugs with a well-built, OE-equivalent option that offers improved longevity and spark stability, these NGK Laser Iridium plugs are a solid choice for your 2010-2012 Subaru Legacy.