The Iveco EuroTurbo 120TA uses 1156 bulb size for both front and rear turn signal applications. Replacement chart data covers 1987 to 1988 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156 is the sole bulb type across all listed positions and years for the Iveco EuroTurbo 120TA, covering both front and rear turn signal applications for 1987-1988.
The 1156 follows the ANSI standard, meaning it conforms to a defined North American specification used in the United States and Canada.
It is a single-filament bulb, which means it serves one lighting function only, as opposed to dual-filament types that handle two functions such as braking and running light simultaneously.
The 1156 uses a BA15s bayonet base, where "BA15s" denotes a bayonet fitting with a 15mm collar and a single contact pin, distinguishing it from the visually similar BA15d base, which carries two offset pins.
The bulb operates at 12 volts, consistent with standard automotive electrical systems.
At 21 watts, the 1156 falls within the typical power range for turn signal applications in vehicles of this era.
The BA15s base is not interchangeable with the BA15d base despite their similar physical appearance, as the pin configuration differs and substitution would result in incorrect fitment.
The 1156 shares its BA15s base with the 1141 bulb, but the two are not functionally interchangeable due to differences in wattage and light output, which can affect turn signal flash rate when used with load-sensitive flasher relays.