Features: Adopted with heat resistant silicone material for whole jacket and reinforced housing, stronger insulation Nickel core to bear high-temperature. Help to solve engine misfire or loss of spark. Prevent your engine from vibration due to bad spark plug harness. Ignition coil cable transport the electricity which produced by the ignition coil to the cylinder, to make sparks among spark plug pole to light the mixture thus make the engine restore it's function. Improve combustion efficiency and strengthen electrical performance. Increase ignition energy intensity for easy starting and smooth riding. This is non-OEM product, accessory ONLY! OE Number:12073990Specification: Color: Black Material: Silicone, Nickel Fit for: for Chevrolet Astro 1988-1990 L4 2.5L Petrol for Chevrolet LLV 1988-1993 L4 2.5L Petrol for Chevrolet S10 1988-1993 L4 2.5L Petrol for Chevrolet S10 Blazer 1988 L4 2.5L Petrol for GMC S15 1988-1990 L4 2.5L Petrol for GMC S15 Jimmy 1988 L4 2.5L Petrol for GMC Safari 1988-1990 L4 2.5L Petrol for GMC Sonoma 1991-1993 L4 2.5L Petrol Installation:Replace your old or broken ignition coil directly and fit Firmly. Please search professional video online when replace it in doubt.Package Includes:5 Pcs Spark Plug Ignition Coil Wires