Porsche 911sc 964 944 928 Ignition Coil OEM Bosch NEW Brand new Ignition Coil with full 1 year warranty. Recently made by OEM Bosch, not some old part laying around. Aging coils start to arc internally rather than at the spark plug, causing poor idle, intermittent no-starts, and lack of torque. Put that spark back in your ride with this FRESH, brand new coil.