OPT7 3157 T-25-4 Nova Plasma LED Bulb - Reverse Signal Backup Light Bulbs w/Load Resistors - White 5-Nova Plasma Plates lights per bulb Nova Plasma technology allows OPT7 LEDs to last 20x longer than halogen, and 3x longer than other LEDs Solid State design makes it 100% water, shock, dust, and rumble-proof Direct Replacement makes install is simple, quick, and customizable Includes a hassle free 1-year manufacturers warranty