Mei 1438 Low Pressure A/C Switch for Peterbilt Trucks

The Mei 1438 is a normally open low pressure switch designed specifically for air conditioning systems in Peterbilt heavy-duty trucks. This precision-engineered component monitors refrigerant pressure to protect the A/C system from low-pressure conditions that could damage the compressor.

Key Features:

• Normally open (N.O.) configuration - closes on pressure rise, opens on pressure drop
• Actuation pressure: 23 PSI (closes circuit)
• Deactuation pressure: 47 PSI (opens circuit)
• Female M12 metric thread fitting for secure installation
• 2-pin electrical connector (use with pigtail 1546)
• Compatible with R134a refrigerant systems
• Direct replacement for OEM part numbers 18-03834, 18-04331, and P93CAA3604-1

Applications:

• Peterbilt 357, 375, 377, 378, 379 Series trucks
• Peterbilt 385, 386, 388, 389 models

Manufactured by MEI Corporation, a trusted leader in heavy-duty HVAC components since 1957. This low pressure switch is engineered to meet the demanding requirements of Class 7 and Class 8 commercial vehicles, ensuring reliable protection for your truck's air conditioning system.

Cross References: Alliance 318184, Industry ID 23820/01-23820, Kysor 2217002, Truck Air 11-2655