Bosch spark plugs are known for their superior quality and fiery performance. Bosch spark plugs have been designed with an extensive range of technology to deliver more power and better fuel economy, sporty driving performance, and improved reliability. The high-quality components used in these plugs help improve engine performance, prolong its life and provide incomparable reliability. With their promising life expectancy, they are ideal for high-power sport and heavy-duty engines. These precision-fit spark plugs are designed to match your Bosch engine, supporting a combination of combustion efficiency, thermal stress, and reliability in the most demanding environments.