25101966
Pressure Switch
Mack

This pressure switch provides a critical sensing function within Mack truck pneumatic or hydraulic systems, signaling system state to controllers and other components. It converts fluid or air pressure changes into an electrical signal, enabling control logic for air brakes, auxiliary systems, or safety interlocks. The unit is designed with a robust housing and electrical connector(s) suitable for harsh mobile environments, including exposure to vibration, temperature fluctuations, and moisture. Setpoints are specified to trigger at precise pressure thresholds, enabling timely activation or cut-out of compressors, valves, or governors. When selecting or replacing, verify thread size, port configuration, electrical rating, and mounting orientation to ensure proper integration with the system harness. After installation, perform leak checks and functional tests to confirm the switch correctly signals under the intended pressure range. Source One Parts Center reminds users to confirm compatibility with your model and to follow OEM torque and sealant recommendations for a reliable seal and long service life.