The Subaru SVX front side marker uses 1157NA or 1034NA bulb sizes, while the rear side marker requires a 168 size bulb. The replacement chart covers 1992 to 1997 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 SVX front side marker position uses dual-filament bulbs across all model years in the specifications, while the rear side marker position uses a single-filament miniature wedge bulb throughout the same period.
The 1157NA is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W high filament and 5W low filament, and features natural amber glass rather than a clear envelope.
The 1034NA shares the same BAY15d bayonet base and 12V, 21W/5W ratings as the 1157NA and is classified as a variant of that bulb type, also with natural amber glass.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, a significantly lower wattage than the dual-filament bulbs used in the front position.
The Subaru SVX (1992-1994 and 1996-1997) uses the 1157NA for the front side marker, while the 1995 model year uses the 1034NA instead.
Although the 1034NA is described as a variant of the 1157NA, the two carry distinct ANSI designations, and the 1995 front side marker position is specified with the 1034NA rather than the 1157NA used in surrounding years.
The BAY15d bayonet base found on both the 1157NA and 1034NA features two offset pins that prevent incorrect orientation during installation, a design associated with dual-filament applications where polarity and pin position are relevant to function.
The rear side marker position on the Subaru SVX uses the 168 wedge bulb across all six model years covered in the specifications, from 1992-1997.
The T10 wedge format of the 168 bulb uses no base pins, relying instead on the wedge-shaped glass envelope to make contact within the socket, which differs from the bayonet retention method used by the front side marker bulbs.
Both the 1157NA and 1034NA carry natural amber glass, meaning the color is produced by the bulb itself rather than by an amber-tinted lens in the housing.