Santech 31-31310 A/C Expansion Valve Thermostatic TXV Replacement

The Santech 31-31310 is a direct-fit OEM-replacement air conditioning expansion valve (also known as a thermostatic expansion valve, or TXV) designed to restore proper refrigerant flow and cooling performance to your vehicle's A/C system. The expansion valve meters the flow of refrigerant entering the evaporator, regulating pressure and temperature to maximize cooling efficiency.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Precision-engineered to restore factory A/C performance and cooling capacity
• Regulates refrigerant flow into the evaporator for efficient heat exchange
• Manufactured to meet or exceed original equipment specifications
• Helps resolve symptoms such as weak cooling, A/C cycling issues, or frost buildup on the evaporator
• Santech part number: 31-31310

A faulty expansion valve is a common cause of reduced A/C cooling performance. Replacing it with a quality unit like the Santech 31-31310 ensures your system operates at the correct pressures and delivers consistent, reliable cabin cooling. Santech is a trusted name in automotive thermal management components, backed by the engineering expertise of Four Seasons.