Subaru Justy front and rear side marker bulbs use 194 and 168 bulb sizes depending on location and model variation. The replacement chart covers 1987 to 1994 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Subaru Justy uses the 194 bulb for all front side marker positions across the full 1987-1994 model range.
The 194 is an ANSI-standard miniature wedge bulb rated at 12V and 3.78W, classified under the T10 form factor.
The rear side marker of the Subaru Justy shifted from the 168 bulb in 1987-1988 to the 194 bulb in 1989-1994.
The 168 bulb is also an ANSI-standard T10 miniature wedge type rated at 12V, but draws 4.9W, making it slightly higher in wattage than the 194.
Both the 194 and 168 share the same T10 wedge base, which means they are physically interchangeable in terms of socket fit, though their wattage ratings differ.
Because the 168 and 194 differ in wattage, substituting one for the other in the rear side marker positions of 1987-1988 models would result in a deviation from the original factory specification.
The consistent use of the 194 bulb across all front positions for the entire 1987-1994 production span reflects a stable front lighting specification throughout the Justy's market life in North America.