Supression core with a thick 8.8mm silicone jacket to eliminate electrical 'leakage'. With stainless terminals and 100% silicone boots. Ready to install. Custom replacement for OEM 31994-91 and 31992-91. Note: For use with electronic ignition systems only, not compatible with points triggered ignition systems.

Fits: > 91-98 FLT, FLHT (NU)