Enhance your audio experience in your Buick Encore GX with the ACDelco GM Original Equipment 42750499 Radio Speaker Amplifier. This GM-recommended replacement part is designed to provide a rich and high-quality sound, manufactured to meet GM OE specifications for a perfect fit, form, and function. The amplifier measures 7.25 inches in width, 13.25 inches in length, and 2.88 inches in height, ensuring compatibility with your vehicle's original factory audio system. With 4 channels, this electronic amplifier is a reliable and durable solution for your audio needs, offering the same quality as your vehicle's original parts. Please note that this item may be a Special Order Part and may take up to 7-10 business days to ship based on availability from General Motors.