Champion Spark Plugs Champion Spark Plug 7940 Boxed Each Double platinum conductors on both center and ground electrodes for longer life & minimal wear Fine wire and V-trimmed electrodes create sharper spark focus More power and quicker acceleration than conventional plugs Heat-Active alloy allows electrodes to reach optimal temperature quickly Maintains stable operating temperature under all engine loads Focused spark for maximum power Exclusive Heat-Active alloy maintains stable operating temperature under all load conditions Faster throttle response