OEM part numbers ensure compatibility and reliability for Harley-Davidson Sportster engines
Multiple resistance options for both points and electronic ignition systems accommodate various model years
Dual fire capability for select models supports advanced ignition needs
Wide model year coverage from 1965 to 2022 for comprehensive restoration and maintenance
Summarized by Shop
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 Oh
Voltage
12V
Output Voltage
35,000V–40,000V
Resistance
0.5 ohm, 3 ohm, 4 ohm, or 5 ohm (model and ignition system dependent)
