High-performance Iridium Spark Plug engineered for precision ignition and extended durability. Features ultra-fine 0.4mm iridium center electrode for superior conductivity and reduced voltage requirements. Laser-welded construction ensures consistent spark delivery and resistance to corrosion. Direct-fit replacement for Toyota 3ZR/2ZR engines in Corolla, Prius, RAV4, and Wish models. Optimized heat range (SC20HR11) prevents pre-ignition while maintaining cold-start reliability. Nickel-plated shell resists seizing in aluminum cylinder heads. Manufactured to exact OEM specifications (90919-01253) with ISO 9001-certified quality control. Ideal for fuel efficiency-focused drivers and high-mileage vehicles. Ships in bulk quantities with factory-direct pricing for commercial buyers. Compatible with both conventional and synthetic oil systems.