MEI / Truck Air Parts TruckAir Parts 11-1407 Switch - Pressure Part No: 11-1407

The Truck Air Parts 11-1407 Pressure Switch is built for the demanding service environment of Class 6–8 trucks, specifically targeting HVAC systems in Peterbilt models. This low-pressure switch features a normally-closed configuration that opens at approximately 40 psi and closes at around 30 psi, ensuring the A/C system is protected from excessively low pressure that can damage compressor or reduce cooling efficiency. The switch uses a 7/16″-20 female thread for secure installation and is designed to meet aftermarket performance standards for durability and fit. Sold by Wofford Truck Parts, this part enables fast replacement and helps minimize truck downtime.