Cobb Subaru WRX/STI/Legacy GT/FXT 2.5L Spark Plugs 4pk (Must Be Purchased w/Power Packages ONLY)

These are COBB spark plugs, sold as a set of four, specifically for Subaru WRX, STI, Legacy GT, and Forester XT models with the 2.5L engine. It's important to note that these plugs are intended to be purchased only as part of a COBB power package. They are designed to work with the specific demands of those performance upgrades.

When you're adding performance parts like those found in a COBB power package, the engine's requirements change. These spark plugs are chosen to meet those updated needs, ensuring proper ignition and combustion under the new operating conditions. They are a well-built component designed to handle the increased stress and heat associated with a tuned engine.