The SYLVANIA Long Life Mini Bulb brings increased bulb life to various automotive lighting applications. These lamps have been engineered to withstand a sizeable amount of road shock and vibration. They are also constructed with a robust filament and proprietary gas mixture that results in much longer life. SYLVANIA lamps are designed to be durable, lower maintenance, and provide greater safety. Product Features:Longer life than basic bulbsLegal for on road useOE (Original Equipment) ManufacturerLight bulbs dim over time and require replacementReplace in pairs for optimal performance