ACDelco Amber Bulb - 15855631 Part #: 15855631 Line: ACD ACDelco Amber Bulb 2 Year LIMITED WARRANTY Bulb Family: 3157NAK Color: Amber Voltage (V): 12.8 Volt Wattage (W): 29 Watt Bulb Diameter (in): 1 Inch SAE/DOT Compliant: Yes Base Type: Wedge Bulb Diameter (mm): 25mm Show More Show Less