The Kenworth, Peterbilt, Volvo, and Western Star Heavy Duty Door Actuator is a reliable and durable solution for your HVAC system. Made with high-quality plastic construction material, this electrical activation type actuator features a 4-pin connector and is sold individually. It is a direct replacement for the original equipment part, ensuring a proper fit and optimal performance. Tested on various vehicles, it fits most Blue Bird, Kenworth, Peterbilt, Volvo, and Western Star models from 1988 to 2019 with sleeper cabs. With direct OE replacement numbers, this actuator is compatible with multiple brands, including Blue Bird, Navistar, Paccar, Freightliner, Volvo, Mack, and General Motors.