NGK has been developing spark plug technology since the 1930s & manufacture plugs for every type of automotive engine, as well as for motorcycles, marine, horticultural, plant & many other applications. In fact NGK produces & stocks over 1, 000 different types of spark plug & every single product matches even the most demanding manufacturers specifications. The vast experience & technology that NGK has ensures that there is no doubt that NGK are the worlds No.1 spark plug.