XPRO Universal SS Ignition CoilUse with Ready to Run DistributorsBrand: AEROFLOWPart Number: AF4020-8207Description: Engineered with advanced bobbin technology, high turns ratio windings encased in a protective polyurethane compound for higher energy and voltage outputs. Results in quicker starts, improved idle quality, crisper throttle response and cleaner high RPM power. These coils are compatible with OEM ignition and capacitive discharge ignition systems. Coil comes complete with vibration mounts and terminals for easy installation. Additional Specifications: Coil Specifications Turns ratio: 70:1 Primary resistance: .355ohms Secondary resistance: 4.4K ohms Inductance: 6.9 mH Maximum voltage: 40,000 VoltsPeak Current: 300 MaSpark Duration: 220 uS Dimensions: Overall Length: 89mmOverall Width: 55mmOverall Height: 68mm Important Information: This coil can be mounted in any position