Isuzu I-Mark Turn Signal Bulb Size
The Isuzu I-Mark front turn signal requires a 1157, 1073, or P21W bulb size, while the rear turn signal uses a P21W or 1073 bulb size. The replacement chart covers vehicle production spanning 1981 to 1989 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front 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 |
|---|---|---|---|
| 1987-1989 | 1157 | P21/5W | Check Price |
| 1986 | 1073 | 1073 | Check Price |
| 1983-1985 | 1156 | P21W | Check Price |
| 1982 | 1073 | 1073 | Check Price |
| 1981 | 1156 | P21W | 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 |
|---|---|---|---|
| 1986-1989 | 1156 | P21W | Check Price |
| 1985 | 1073 | 1073 | Check Price |
| 1981-1984 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 | Check Price |
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 1073 | 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 |