Choose between our Classic 3 ground plugs or our Iridium plugs Cold, standard or hot plugs Cold for performance Standard for standard road use Hot for short journeys or tired smokey engines TRIPLE GROUND :Upgrade your vehicle's performance with AccuSpark Triple Ground Spark Plugs, these plugs feature a triple-ground electrode design that offers multiple pathways for the spark, enhancing ignition reliability and reducing the chances of misfires. The durable construction ensures longevity, making them a cost-effective choice for classic cars like MGB, classic Ford, Mini, Reliant, and Land Rover. Experience smoother starts and improved engine performance with AccuSpark's proven technology. IRIDIUM: Upgrade your vehicle's ignition system with AccuSpark Iridium Spark Plugs, engineered for drivers seeking enhanced performance and efficiency. Iridium, known for its exceptional hardness and high melting point, allows for a finer central electrode. This design ensures a more consistent and powerful spark, leading to improved combustion, better acceleration, and increased fuel efficiency. Additionally, the durability of iridium means these spark plugs have a longer lifespan compared to traditional copper or platinum plugs, reducing maintenance frequency. Experience smoother engine performance and responsiveness with AccuSpark Iridium Spark Plugs—where advanced technology meets reliability.