FeaturesDenso # 3426Extra Long Life Iridium Plug0.5 mm Fine Wire Iridium Center Electrode0.7 mm Platinum Needle Tipped Ground ElectrodeDenso # 3426 Extra Long Life Iridium Plug 0.5 mm Fine Wire Iridium Center Electrode 0.7 mm Platinum Needle Tipped Ground ElectrodeIridium plugs ...FeaturesDenso # 3426Extra Long Life Iridium Plug0.5 mm Fine Wire Iridium Center Electrode0.7 mm Platinum Needle Tipped Ground ElectrodeDenso # 3426 Extra Long Life Iridium Plug 0.5 mm Fine Wire Iridium Center Electrode 0.7 mm Platinum Needle Tipped Ground ElectrodeIridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum tipped ground electrode, creates a spark plug that is almost impervious to wear even under extreme driving or racing conditions.
Dual needle design offers better fuel economy, idle stability, lower emissions and improved performance.