TRIDON IGNITION COIL PACK COIL ON PLUG 6 IN THE KIT for FORD FALCON BA BF. FORD BA BF FALCON 6CYL 4.0L MODELS INC XR6 TURBO OR LPG FORD TERRITORY SX & SY SERIES (NOT FOR SZ MODELS). THIS LISTING COME WITH 6 X COIL. FORD PART NUMBER: BA12A366A OR BAF12A366A. The ignition coil is an integral part of the vehicle ignition system. The ignition coils primary purpose is to transform the low tension voltage supplied via the vehicle battery into a high tension voltage required to produce a spark at the spark plug. This is achieved though the interruption of the low tension voltage (by an ...