OEM Numbers: 12 13 1 712 219--BMW,12 13 7 551 260--BMW,12 13 7 594 938--BMW,12 13 7 594 938--ROLLS-ROYCE,LVCL805--CITROËN/PEUGEOT,12 13 1 712 219--ALPINA. An ignition coil transforms the battery's 12 volts to thousands of volts needed to produce a spark to the spark plugs.
