Dual Ignition Coil 31655-99 for Harley 2000-2006 FXSTB 1BTY Night Train 21020225
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Dual Ignition Coil for Harley
The Dual Ignition Coil 31655-99 is a direct replacement ignition coil designed to restore reliable spark delivery for Harley-Davidson motorcycles, including the FXSTB Night Train and Road King Custom models. It works with dual-fire ignition systems to ensure consistent combustion and performance.
Overview
This Dual Ignition Coil 31655-99 replaces a worn or faulty coil to maintain strong spark output and engine stability. It is built for Harley-Davidson touring and softail models from the early 2000s, providing a dependable OEM-style fitment. This dual ignition coil delivers the high-energy spark needed for smooth idling and throttle response.
Built For Performance
- Epoxy-sealed windings resist vibration and moisture for long service life
- Dual-fire design fires both spark plugs simultaneously for consistent combustion
- Direct-fit replacement for OEM coil part 31655-99
- High-output secondary voltage supports stock and mild performance engines
- Compact housing mounts in the original location without modification
Fits These Machines
- for Harley FXSTB Night Train 2000-2006
- for Harley FLHRS Road King Custom 2004-2006
On-The-Job Use
- Used for daily commuting and long-distance touring where consistent ignition is critical
- Suitable for weekend cruiser rides on softail and touring frames
- Handy for replacing a failing coil during routine tune-ups or electrical troubleshooting
Specs At A Glance
| Part Number(s) | 31655-99, 21020225 |
| Type | Dual ignition coil |
| Voltage | 12V system |
| Wiring | Dual-fire (wasted spark) |
Good To Know
Q: Will this coil fit my 2003 Night Train with a stock ignition? A: Yes, this coil matches the 31655-99 fitment for FXSTB models from 2000-2006 and works with the stock dual-fire ignition module.
Q: Is this an original Harley-Davidson part? A: No, this is an aftermarket replacement built to match the OEM specification for the 31655-99 coil, offering the same function and fit.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.