IKH20 5344 Double Iridium Spark Plug, Preferred Ignition Upgrade for Chevrolet and Toyota Models

IKH20 5344 twin-iridium spark plugs installed on cylinder head block, spark at the end of compression to ignite the mixture and push the piston. Fits 2000s Chevrolet and Toyota models, installation difficulty medium, recommended time 30–60 minutes. If symptoms of idle jitter, weak acceleration, higher fuel consumption, or starting difficulty occur, electrode wear or heavy carbon buildup; replace to restore ignition.