Premium Auto Double Iridium Spark Plug R6 6857 delivers unmatched ignition performance for Toyota, Nissan, Hyundai, Honda, and Ford vehicles. Engineered with dual iridium electrodes for extreme durability and consistent spark efficiency. Precision laser-welded tip ensures optimal combustion and fuel economy. Features anti-corrosion nickel plating for extended lifespan in harsh conditions. Ideal for high-performance engines and daily commuters seeking reliable cold starts. Direct OEM replacement with exact heat range specifications. Factory pre-gapped for hassle-free installation. Bulk purchase available for commercial workshops and fleet maintenance. Ships globally with wholesale pricing for large quantity orders.