* KOYO is a registered trademark of JTEKT.

The primary function of a spark plug is to ignite the air-fuel mixture within the combustion chamber of an internal combustion engine. Traditional spark plugs, while effective, often struggle to deliver consistent performance under extreme conditions such as high engine loads or low temperatures. This can lead to decreased power output, reduced fuel economy, and increased emissions. The 14mm spark plug is not just a mere spare part; it embodies the principle of precision engineering in the automotive sector. By ensuring reliable ignition and contributing to cleaner emissions, it demonstrates how even the smallest components can have a profound impact on our driving experience and the environment.