Four Seasons 39121 A/C Expansion Valve - Rear

Overview of Four Seasons Expansion Valve 39121

The Four Seasons Expansion Valve 39121 is designed specifically for Toyota Sienna models requiring a reliable A/C expansion valve. Crafted from brass and engineered for R134a refrigerant systems, this TXV type valve ensures precise control of refrigerant flow within your vehicle's air conditioning system.

• Compatible with Toyota Sienna models
• Constructed from durable brass material
• Designed for R134a refrigerant type
• TXV (Thermostatic Expansion Valve) type for accurate refrigerant metering
• Part number 39121 for easy identification and replacement

Detailed Product Description

The Four Seasons Expansion Valve 39121 is part of the Expansion Valve product line, which focuses on delivering precise refrigerant flow control to optimize A/C system performance. This valve is made from brass, providing corrosion resistance and durability under varying operating conditions. It is specifically designed for use with R134a refrigerant, the standard in many modern automotive air conditioning systems. The TXV type valve regulates refrigerant flow based on temperature and pressure, helping maintain consistent cooling efficiency in Toyota Sienna vehicles. Using the correct expansion valve like the Four Seasons 39121 ensures your A/C system operates within manufacturer specifications.

Common Applications and Issues Addressed

• Restores proper refrigerant flow in Toyota Sienna A/C systems
• Resolves inconsistent cabin cooling or fluctuating temperatures
• Prevents compressor damage caused by improper refrigerant metering
• Eliminates issues related to refrigerant overfeeding or starvation
• Helps maintain system pressure balance for efficient operation

Installation Notes and Tips

• Ensure compatibility with Toyota Sienna model year before installation
• Handle the brass valve carefully to avoid damage during installation
• System evacuation and recharge with R134a refrigerant is required after replacement
• Follow manufacturer torque specifications for valve mounting
• Check for leaks and proper system pressure post-installation

Quality Assurance and Warranty

Four Seasons Expansion Valve 39121 is manufactured to meet industry standards for HVAC components. The brass construction and TXV design contribute to long-term reliability in Toyota Sienna A/C systems. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Consult product packaging or manufacturer documentation for exact warranty terms.