The Blaster 3 coil from MSD ignition is an ideal upgrade for a stock coil and they are a perfect combination to use with MSD ignition control units. Designed to provide a better spark, the Blaster 3 coil features special 100:1 windings with a 45,000v output.Provides a better spark to improve performanceExtra tall tower design for improved spark isolation and coil wire connection90 Degree lead terminal and boot suppliedLow resistance and 100:1 turn ratio provide a powerful sparkThe blaster 3 ignition coil provides a stronger spark than a stock coil which can improve engine performance, provide better starting and also improve fuel economy. A ballast resistor is not required.Specifications:Inductance: 8mHMaximum voltage: 45,000 vPeak current: 140 mAPrimary resistance: 0.7 OHMsSecondary resistance: 4.5K OHMsSpark duration: 350uSTurns ratio: 100:1