Sierra 18-5472 Hi-Performance Ignition Coil Super low 0.6 ohm resistance coil; Designed for use with Ignitor II Hi-Performance Electronic Conversion Kits; Compatible with capacitive discharge systems; Oil filled for better cooling and long life; Low resistance and improved turn ratios; Produces the higher voltage needed to run larger spark plug gaps; Added power and better fuel economy; More windings maximize energy and reliability over the full RPM range; Fits existing brackets for easy installation; Resistance Ohms: 0.6Flame-Thrower Volt Coil: 45,000Cyl: 4, 6, & 8Use With: 18-28100: Coil Lead Wire; 18-5285: Hi Performance Electronic Conversion Kit; 18-5287-1: Hi PerFormance Conversion Kit; 18-5288: Hi-Performance Conversion Kit; 18-5289: Hi-Performance Conversion Kit; 18-5290: Hi-Performance Conversion Kit; 18-5286: Hi-Performance Electronic Conversion Kit;