NGK DIFR5C 90911 Spark Plug Iridium

The NGK DIFR5C is part of the NGK Laser Iridium range.NGK Laser Iridium is original-equipment specification: the plug type fitted on the production line by many manufacturers. It pairs a laser-welded iridium centre electrode with a platinum pad on the ground electrode so both wearing surfaces are precious metal, which is what allows the very long service intervals modern engines are scheduled for. Consistent ignition over the life of the plug keeps fuel consumption and emissions where the maker intended. Use it as the like-for-like replacement where the vehicle handbook spe