12 Volt Ignition Coil 35,000V-40,000V output
 
Harley OE Part Num: 31609-65 is 5 Ohm for points     
Fits: 1965-79 Sportster
Harley OE Part Num: 31609-80 is 4 Ohm for mid-electronic ignition 
Fits: 1980-84 Sportster
Harley OE Part Num: 31614-83A is 3 Ohm for electronic ignition 
Fits: 1985-2003 Sportster 
Harley OE Part Num: 31646-98 is 3 Ohm Dual Fire 
Fits: 1998-2003 Sportster Sport XLS
Harley OE Part Num: 31655-99 is 0.5 Ohm   
Fits:  2004-06 Sportster
Harley OE Part Num: 31656-07 is 0.5 Ohm   
Fits:  2007-2022 Sportster