Set of 4 Coil PacksGenerally when one coil pack fails that means the rest will also fail soon. We recommend you change all coil packs at once. That way a month later you won't be running a cylinder short because one of your other coil packs failed. Benefits of Bosch original equipment quality ignitions coils include the right ignition voltage, long lasting spark, better engine running conditions, lower fuel consumption, and reduced exhaust emissions.Direct fit applicationEnsure reliable voltage for smooth engine performanceExcellent mechanical stability and corrosion protectionLower fuel consumption and reduced exhaust emissions for your vehicleMeets or exceeds OEM specificationPart #'s06H-905-110-P / 06H905110 P / 06H 905 110 P / 06H905110P06H-905-110-H / 06H905110 H / 06H 905 110 H / 06H905110H06H-905-110-L / 06H905110 L / 06H 905 110 L / 06H905110L06H-905-110-G / 06H905110 G / 06H 905 110 G / 06H905110G06K-905-110-K / 06K905110 K / 06K 905 110 K / 06K905110K06L-905-110-H / 06L905110 H / 06L 905 110 H / 06L905110H06J-905-110-N / 06J905110 N / 06J 905 110 N / 06J905110N