Denso Double Platinum OE Replacement Spark Plug

• Effectively operates up to or over 60,000 miles
• 5-rib design prevents flashover while lessening voltage loss
• Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
• Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for utmost firing performance and minimum voltage requirements

These Spark Plugs are constructed with heavy duty insulator for unmatched dielectric power and thermal conductivity under extreme temperatures. Denso employs platinum to both the center and ground electrodes for advanced resistance to erosion and corrosion.