This aftermarket replacement remote head key is compatible with systems using FCC ID HYQ12BBT and part numbers 89070-48821, 89070-48820. It features a 3-button remote head key design and comes fully assembled with internal electronics and a pre-installed battery. Each unit is pre-tested to ensure consistent signal strength and reliable performance. Professional programming by a qualified automotive locksmith or service center is required. Always confirm FCC ID and part number compatibility before purchasing.