What is the lifespan of the OEM NGK spark plugs for the 10th-generation Civic?

[LeMiles]

The 10th-generation Civic uses OEM NGK iridium spark plugs, which have a replacement interval of 100,000 kilometers. Spark plugs are a crucial component of a gasoline engine's ignition system. They introduce high-voltage electricity into the combustion chamber, causing it to jump the electrode gap and create a spark, thereby igniting the combustible air-fuel mixture in the cylinder. Steps for replacing spark plugs: Open the engine hood, remove the plastic engine cover, and detach the high-voltage ignition wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. During removal, check for any external debris like leaves or dust and ensure thorough cleaning. Insert the new spark plugs into the spark plug holes, hand-tighten them for a few turns, and then use the socket to tighten further. Reinstall the high-voltage ignition wires in the correct firing order and reattach the cover.