The Mitsubishi 3000GT uses front side marker bulbs in sizes 1034NA, 3496, and 194, along with rear side marker bulbs in sizes 2057 and 194. A replacement chart covering 1991 to 1999 contains vehicle production years and bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the most consistently used type across the Mitsubishi 3000GT's side marker positions, appearing in both the front and rear on 1991-1993 model years. It is a miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, and follows the ANSI standard for the US and Canadian markets.
The 3496 bulb is a dual-filament type with a BAY15d bayonet base, rated at 12V, and is classified as a variant of the widely used 1157. It serves as the front side marker bulb on the 1994-1998 Mitsubishi 3000GT.
The 2057 bulb shares the same BAY15d bayonet base and dual-filament construction as the 3496 and 1034NA types, but is rated at 26.9W/8W, making it the highest-wattage bulb in these specifications. It is used in the rear side marker position for 1994-1999 model years.
The 1034NA bulb, used in the 1999 front side marker position, is distinguished from other 1157 variants in these specifications by its natural amber glass construction. Like the 3496 and 2057, it uses a BAY15d bayonet base and is a dual-filament bulb rated at 12V, 21/5W.
The BAY15d bayonet base is a dual-contact base type where the two pins are offset at different heights, which prevents incorrect single-filament bulbs from being inserted. This base is shared by the 3496, 2057, and 1034NA bulbs across these specifications.
Although the 3496 and 1034NA are both listed as variants of the 1157 with BAY15d bases, they are not interchangeable in the 3000GT's front side marker position. The 1034NA is specific to the 1999 model year, while the 3496 covers 1994-1998, and substituting one for the other may affect light output or color output due to the amber glass of the 1034NA.
The front and rear side marker positions on the 1991-1993 3000GT both use the same 194 bulb, meaning no distinction exists between front and rear bulb types for those years. From 1994 onward, the front and rear positions diverge into different bulb types entirely.
The 2057 is described as a brighter variant of the 1157, and while it shares the BAY15d base with the 3496, the two are not specified interchangeably within these fitment rows. The 2057 is assigned exclusively to the rear side marker, and the 3496 exclusively to the front, across the overlapping 1994-1998 model years.