The Iveco EuroTurbo 450T uses 1156 bulb size for both front and rear turn signal applications. The replacement chart covers vehicle production spanning 1987 to 1990.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12 volts and 21 watts under the ANSI standard used in the United States and Canada.
The BA15s bayonet base features a single contact pin, which distinguishes it from the dual-pin BA15d base. This single-pin configuration is a key fitment detail, as substituting a dual-pin base bulb would result in an incompatible fit.
The Iveco EuroTurbo 450T uses the 1156 bulb across both its front and rear turn signal positions for the 1987-1990 model years.
Because the same bulb type is specified for both the front and rear turn signal positions, the 1156 is interchangeable between those two locations on this vehicle.
At 21 watts, the 1156 operates within the typical power range for incandescent turn signal bulbs, a factor relevant when assessing compatibility with the vehicle's flasher relay, which is generally calibrated to a specific load.