Cadillac Seville Turn Signal Bulb Size

The Cadillac Seville front turn signal uses 4157NA, 3157NA, or 2357NA bulb sizes, while the rear turn signal requires 3057, 2057, or 1157 bulb sizes depending on model generation. The replacement chart covers 1976 through 2004 production years with corresponding bulb size specifications for each generation.

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