Each Intermotor coil on plug is constructed from reinforced fiber glass neodymium magnet technology and grain-oriented electrical steel to prolong engine life. Every Intermotor coils use high-temperature epoxy resists shock and vibration, while increasing thermal conductivity to ensure superior engine performance. Each Intermotor coil has an advanced bobbin technology, highly specialized silicone magnetic steel core along with optimized winding provide an accurate high energy output for increased engine performance. Each coil is precision wound and trimmed to produce accurate output voltage for optimized fuel efficiency.