The Subaru Loyale front and rear side marker bulbs both require a 194 size bulb for proper illumination. The replacement chart covers 1990 to 1994 model 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 Loyale uses the 194 bulb for both its front and rear side markers across the 1990-1994 model years.
The 194 is an ANSI-standardized bulb type, meaning its specifications are governed by a formal industry standard recognized across the United States and Canada.
This bulb follows the T10 miniature wedge form factor, a designation that refers to its base style rather than a screw or bayonet mount, relying instead on tension from the socket to hold it in place.
The 194 operates at 12 volts and draws 3.78 watts, placing it among the lower-wattage bulbs found in automotive lighting applications.
Because the same 194 bulb size is specified for both the front and rear side marker positions on the Subaru Loyale, a single bulb type serves all four side marker sockets on the vehicle.
The T10 wedge base is a widely used form factor in automotive lighting, and the 194 shares this base with several other bulb types in the same family, though wattage and voltage ratings can differ between them, making direct substitution a matter requiring attention to electrical specifications.