The Peterbilt 300 Series 1994 Through 2011 Heater Valve Air Door Actuator is a high-quality, direct replacement for specified vehicles. Made with durable plastic construction material and featuring electrical activation, this HVAC heater blend door actuator fits and functions like the original equipment part. It has undergone on-vehicle testing to ensure proper fit and performance. Designed to fit most Peterbilt 1994-2011 models, including 330, 335, 340, 357, 378, 379, 385, 386, 388, and 389, this actuator is a reliable choice. It is a direct OE replacement with part numbers Paccar: 5X010029, 5X012578, and P93CAB0201-01S, and Navistar: ZGG717065.