The VX Spark Plugs from NGK meet the highest quality standards. Specifically designed for 4-stroke engines, these spark plugs enhance performance and optimize starting behavior through a thin platinum center electrode (B9HVX=B9HS). Before placing an order, please verify manufacturer specifications. The innovative design of the NGK Spark Plug B9HVX=B9HS ensures superior ignition efficiency, contributing to smoother engine operation and increased fuel efficiency. This makes it an excellent choice for those seeking reliable and high-performing engine components.