Ignition Coils OEM Replacement

Accurate reproductions of the square style coil as used by the factory on all models during the 1930-1947 period.

This ignition coil is a direct replacement for Harley-Davidson Big Twin models from 1948 to 1960. It generates the necessary voltage for reliable ignition of the spark plugs, ensuring smooth and stable engine operation.

The switch from 6-volt to 12-volt electrics in 1965 also called for a new ignition coil. When double the battery voltage runs through an old 6-volt coil, it can get pretty warm. The breaker points don’t handle such high currents well either. That’s why, starting in 1965, Electra Glides with 1200 cc and Sportster models with 900 cc came with a simple black, sealed coil with 5 ohms of resistance to deliver the spark. Just like the original, our reproduction coil is compatible with breaker points as well as the first factory electronic ignitions through 1979. And Dyna  S ignitions also require 5-ohm coils if you’re riding your Harley-Davidson on the street rather than the track.

In 1983, Harley-Davidson introduced a new coil for V-twin engines with electronic ignition, featuring only 2.8 to 3 ohms of resistance between the screw terminals (according to specifications from the second half of the 1980s). This coil works with all factory black boxes controlled by a sensor in the cam cover, as well as many custom ignitions, but not with the Dyna S. Original Harley-Davidson coils and our reproduction coils are easy to recognize by their squared-off shape. If you’re looking for a trouble-free replacement part, this is the one. Still, it’s always recommended to check the resistance value on your old coil.

For OEM single fire crankposition triggered ignitions on carbureted engines.

For OEM single fire crankposition triggered ignitions on EFI engines. Accel Super Coils deliver up to 20% more voltage than the original counterparts for maximum spark energy to the plug.