These ACCEL Ford 4-tower style EDIS Super Coil packs are a direct replacement for your factory coil packs. They feature advanced bobbin technology, a specialized magnetic steel core, and optimum winding. You will get higher energy and voltage outputs, plus arc duration. They are sold individually and are very easy to install. Coil Style: Coil pack Primary Resistance: 0.500 ohms Coil Internal Construction: Epoxy Maximum Voltage: 42,000 V Turns Ratio: 85:1 Secondary Resistance: 11.6K ohms Coil Wire Included: No Ballast Resistor Included: No Coil Color: Black/Yellow Coil Shape: Square Application: 1996-1998 Ford Mustang Cobra and GT 4.6L 1991-1993 Ford Mustang 2.3L