Representative Image PerTronix Ignitor Ignition Coil - 28010 Part #: 28010 Line: PTX PerTronix Ignitor Ignition Coil 90 Day Limited Warranty Color: Black Height (in): 6 Inch Outside Diameter (in): 2-1/8 Inch Bracket Included: No Coil Shape: Round Coil Wire Attachment: Socket Turns Ratio: 50:1 Secondary Resistance (Ohm): 5300 Ohm Inductance (mH): 10.4 mH Maximum Voltage (V): 30000 Volt Show More Show Less