The NGK 6431 Surface Gap Spark Plug - BU8H is designed for high compression applications, offering near immunity to pre-ignition. It features trivalent metal plating for superior anti-corrosion and anti-seizing properties, ensuring durability and reliability. Corrugated ribs prevent flashover, while the pure alumina silicate ceramic insulator provides exceptional strength and efficient heat transfer. The copper core aids in heat removal, and triple seals prevent leakage, making this spark plug a dependable choice for maintaining optimal engine performance even under demanding conditions.

Part number: BU8H