Genuine OE BOSCH 0221119027 Ignition Coil All Bosch ignition coils are built to achieve or exceed OE specifications & are known industry-wide for their reliability & performance. Bosch ignition coils convert low voltage into high ignition system voltage, creating an electric spark sent to the spark plugs which ignites the fuel. Meets or exceeds OEM specification Excellent mechanical stability & corrosion protection Direct fit application Lower fuel consumption & reduced exhaust emissions for your vehicle Ensures reliable voltage for smooth engine performance