NGK RC-GMX091 Spark Plug Wire Set Set includes 8 wires (Coil Lead N/R) 7mm ultra-low resistance magnetic core, wire wound ignition cables with OEM or better specified spark plug and distributor boots Numbered for easy cylinder identification and coil wires are color coded for correct and easy installation Positive-locking, corrosion-resistant stainless steel terminal ends for tight fit and maximum resistance to vibration and separation High-temp (250+ C / 482+ F) silicone outer jacket resists moisture, oil/petrol and cracking due to temperature extremes