Mitsubishi Fuso FK front and rear turn signal bulbs utilize 1156 size bulbs for both applications. The replacement chart covers vehicle production spanning 1986 to 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Fuso FK uses the 1156 bulb for both its front and rear turn signals across all model years covered in the specifications, spanning 1986-1998.
The 1156 is a single-filament bulb, which is the standard configuration for dedicated turn signal applications where the bulb serves only one lighting function rather than combining, for example, stop and tail functions in a single unit.
The 1156 operates at 12 volts and 21 watts, placing it within the typical power range for incandescent automotive signal lighting.
The 1156 uses a BA15s bayonet base, a single-contact bayonet mount in which the "s" denotes a single contact pin offset to one side, ensuring the bulb seats in only one orientation.
The 1156 conforms to ANSI standards and is recognized in both the United States and Canada, reflecting a standardized specification shared across a wide range of North American vehicle applications.
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 the FK.
The BA15s base of the 1156 is not interchangeable with the BA15d base used on dual-filament bulbs such as the 1157, as the pin configurations differ and the sockets are not compatible.