The Hino SG19 front side marker bulb uses a 194 or P21W size, while the rear side marker bulb requires a 67 size. The replacement chart covers vehicle production from 1987 to 1992 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 SG19 front side marker uses two distinct bulb types across its model years, with the 194 fitted to 1989-1992 models and the P21W fitted to 1987-1988 models.
The 194 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, and is common in North American automotive applications.
The P21W follows the ECE standard used in European and international markets. It is a single-filament signalling bulb with a BA15s bayonet base, rated at 12V and 21W, making it significantly higher in wattage than the 194.
Because the 194 uses a wedge base and the P21W uses a BA15s bayonet base, the two front side marker bulbs are not interchangeable despite both operating at 12V.
The wattage difference between the P21W (21W) and the 194 (3.78W) is substantial, meaning the two bulbs produce notably different light output levels and draw different amounts of current from the vehicle's electrical system.
The Hino SG19 rear side marker uses the 67 bulb across all listed model years, 1989-1992.
The 67 is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V and 8W. It shares the same base type as the P21W but is a lower-wattage variant.
The 67 bulb is described as a lower-wattage variant of the 1156. While the 67 and 1156 share the BA15s bayonet base, their wattage ratings differ, and the two are not direct substitutes in applications where wattage tolerance is a factor.
The rear side marker's BA15s base on the 67 bulb is physically compatible with the P21W's base type, though the wattage ratings differ at 8W and 21W respectively, which affects their suitability for specific circuit designs.
Both the 194 and the 67 conform to ANSI standards, indicating their primary market fitment is North America, while the P21W's ECE classification reflects a European or international market origin.