Different spark plugs depend on the engine cylinder, but they are different in performance. Choose a product that is highly recommended by many to avoid pre-ignition and detonation and might cause expensive engine damage. The TR4 Spark Plugs from Autowares feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching. Key Features: It is made in a copper core that aids in heat removal, triple gasket seals to prevent combustion gas leakage, and corrugated ribs that prevent flashover. It will provide superior strength, better heat transfer, and the best anti-corrosion and anti-seizing properties. These products are tested to the highest OE standards and offer reliable performance with improved ignitability. Specifications: Brand: Autowares SKU: 86-3754 UPC: 087295037546 Weight: 0.15 LBS Core Materials: Copper