1157 LED Icis Blue Single Pack. LED's (Light Emitting Diodes) have an estimated life span of 100,000 hours. LED Bulbs use a fraction of the energy that a halogen bulb does while producing brighter more efficient and longer lasting light. Replaces: BAY15D 2057 2357 2397 7528 3496. BA15D replaces 90 1004 1076 1142.