V-Factor coils are the high-quality direct fit with at least 20% more voltage than stock. In a late O.E.M.-style molded case, these ignition coils improve
V-Factor coils are the high-quality direct fit with at least 20% more voltage than stock. In a late O.E.M.-style molded case, these ignition coils improve starting, stops, high-speed misfires, mileage and overall performance.* Replaces OEM # 31655-99, 31704-99* Fits in the stock location with no modificationsTech Tips:-* Will not replace OEM # 31639-99 or SE 31707-99 used on someFLHT/FLT models