The Peterbilt 320 1997 Through 2011 Heater Control Valve Actuator is a durable plastic construction material with an electrical activation type. It features 1 input and 2 output ports, making it a practical and cost-effective solution for your vehicle. Sold individually, this actuator allows you to reduce repair costs by replacing only the failed part, rather than the entire assembly. With no special tools required for installation and a 4 pin connection, it fits most Peterbilt 320 models from 1997 through 2011, making it a convenient and efficient choice for your vehicle's needs.