The NGK R7438-8 Racing Spark Plug pack of 4 is a high-performance spark plug designed for racing applications. With a manufacturer part number of R7438-8 and a 3-month seller warranty, these spark plugs are sure to provide reliable and consistent ignition for your vehicle. The pack of 4 ensures that you have a spare set on hand for any maintenance or repairs that may be needed. Upgrade your racing engine with these quality NGK spark plugs for improved performance and efficiency.