The Hino FE17 front turn signal uses a P21W bulb size while the rear turn signal accommodates either 1156 or 1157 bulb sizes. The replacement chart covers 1987 through 1991 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Hino FE17 front turn signal uses two distinct bulb types across its model years, with the 1157 fitted in 1987-1988 and the P21W fitted in 1989-1991.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, mounted on a BA15s bayonet base, and is common in European and international automotive applications.
The 1157 is an ANSI-standard dual-filament bulb rated at 12V with a 21W main filament and a 5W secondary filament, mounted on a BAY15d bayonet base, and is standard in North American automotive applications.
The 1156 is an ANSI-standard single-filament bulb rated at 12V and 21W, also mounted on a BA15s bayonet base, and is common in North American rear signalling applications.
The Hino FE17 rear turn signal uses the 1157 in 1987-1988 and transitions to the 1156 in 1989-1991.
The front and rear turn signals of the Hino FE17 share the same bulb type only in 1987-1988, when both positions use the 1157.
Although the P21W and the 1156 share the same BA15s bayonet base and identical 12V/21W ratings, they originate from different standardization systems, ECE and ANSI respectively, and are not guaranteed to be interchangeable without verification of socket and housing fitment.
The BAY15d base of the 1157 features offset pins to prevent incorrect installation of its dual-filament design, making it physically incompatible with the single-pin BA15s sockets used by the P21W and 1156.