The NGK 5574 (BPM8Y) NGK Spark Plugs - 4 Pack is a set of high-quality spark plugs designed for optimal performance in vehicles. Manufactured by the reputable brand NGK, these spark plugs are known for their durability and reliability. The pack includes four spark plugs, making them suitable for use in multiple vehicles. Additionally, the spark plugs come with a California Prop 65 Warning due to the nickel content. Perfect for suspension, springs, and related components, these spark plugs are a crucial part for maintaining the engine's efficiency and power output.