Ignition Coil & Iridium Spark Plugs & Wire Chevrolet Silverado 2500 HD 3500 HD (2020) 6.6L V8High Energy Ignition Coil & Iridium Spark Plug Kit for Chevrolet Silverado Replaces failing factory ignition components to restore proper combustion, eliminate misfires, and improve throttle response under heavy loads. The Stock Silverado L8T Heat Soak Problem The stock Silverado L8T ignition system degrades over time due to intense thermal cycling under the hood, especially when towing or hauling heavy payloads. Continuous high temperature exposure
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Ignition Coil & Iridium Spark Plugs & Wire Chevrolet Silverado 2500 HD 3500 HD (2020) 6.6L V8