This A/C Control Knob is a practical and essential accessory for Peterbilt Models 357, 378, 379, 385, 386, and 389 from 2005 to 2016. Made of durable chrome plastic, this knob is designed to enhance the functionality and appearance of your vehicle's air conditioning system. With its easy installation and compatibility with various models and years, this A/C Control Knob is a reliable and convenient choice for any Peterbilt owner.