NGK - Laser Iridium Spark Plug for Mariner & Mercury (ILFR6G-E) Option:ILFR6G-E if the weight difference is

if the weight difference is higher the cartridge should be replaced

Using this software

“Plug & Play” wiring connections to shorten the installation time

Screws: You can reuse the factory screws

NGK - Laser Iridium Spark Plug for Mariner & Mercury (ILFR6G-E) Option:ILFR6G-E if the weight difference isLaser welded Platinum or Iridium center electrode tip Platinum disc welded to backside of ground electrode provides long life Trivalent Metal Plating provides superior anti corrosion and anti seizing properties Faster starts and quicker acceleration Better fuel economy and lower emissions Best spark plug available in their category Original Equipment Manufacturer approved design