Subaru Standard Side Marker Bulb Size

Subaru Standard front and rear side marker bulbs both utilize a 194 bulb size. The replacement chart covers vehicle production spanning 1980 to 1987.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Side Marker

Years	Bulb Size
1980-1987	194

Years	Bulb Size
1980-1987	194

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

The Subaru Standard uses the 194 bulb for both the front and rear side marker positions across the 1980-1987 model years.
The 194 is an ANSI-standardized bulb type recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared by multiple manufacturers.
The 194 bulb is a T10 miniature wedge type, which refers to its wedge-shaped base that holds the bulb in place without a separate metal socket pin.
The T10 wedge format is a common fitment in low-intensity automotive lighting positions such as side markers, where a compact form factor is practical.
The 194 operates at 12 volts and draws 3.78 watts, placing it in the low-wattage range typical of indicator and marker lighting rather than primary illumination.
Because the Subaru Standard uses the same 194 bulb in all four side marker positions, front and rear replacements draw from the same bulb specification without variation.
The T10 wedge base of the 194 is shared with several other bulb numbers in the same family, though wattage and voltage ratings can differ between them, making direct substitution dependent on matching those electrical values.