Ideal for upgrading your standard OE spark plugs 10.05.2026, 10:01:06. NGK uses 98% pure Copper in place of the iron core found in conventional plugs and is the secret to their wide heat range. NGK Standard spark plugs have special nickel alloy electrodes, specifically shaped/ground for each application, that optimises spark performance and increases the durability of the spark plug, for longer service life.
eBay