Honda Motorcycle ST1100 Turn Signal Bulb Size
Honda Motorcycle ST1100 front turn signal bulbs use 1034 size while rear turn signal bulbs use P21W or 1073 size. The replacement chart covers 1991 to 2003 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Turn Signal
| Years | Bulb Type | Shop |
|---|---|---|
| 1991-2003 | 1034 | Check Price |
Rear Turn Signal
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2003 | 1156 | P21W | Check Price |
| 2002 | 1073 | 1073 | Check Price |
| 1998-2001 | 1156 | P21W | Check Price |
| 1997 | 1073 | 1073 | Check Price |
| 1996 | 1156 | P21W | Check Price |
| 1995 | 1073 | 1073 | Check Price |
| 1993-1994 | 1156 | P21W | Check Price |
| 1992 | 1073 | 1073 | Check Price |
| 1991 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1034 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 1073 | Check Price |