Reliable and highly efficient: Bosch ignition coils convert the voltage of a vehicle battery into thousands of volts. This is required to provide the high energy for an electric spark in the spark plugs that ignites the fuel-air mixture Function and quality tests to the same standards as original equipment parts: for high performance and reliability over a long service life High-quality materials and manufacturing methods: for excellent resistance to heat, vibration and corrosion as well as long-lasting electrical mechanical stability Please use the vehicle identification to confirm compatibility with your vehicle. All restrictions must be observed All work should only be carried out by trained professionals