High performance nickel alloy LZKR6B-10E1578 spark plugs engineered for modern Kia motorcycles and sedans. Premium nickel-core electrodes ensure superior conductivity and extended durability. Precision-crafted ceramic insulator resists extreme heat and voltage fluctuations. Optimized thread design guarantees seamless installation and anti-corrosion performance. Ideal for Boxer series engines demanding reliable ignition and fuel efficiency. Advanced thermal dissipation prevents pre-ignition under high-RPM conditions. OEM-grade quality at wholesale pricing for bulk purchasers.