Four Seasons 38906 A/C Expansion Valve

Reliable A/C Expansion Valve for Buick, Chevrolet, Oldsmobile, Pontiac

The Four Seasons Expansion Valve 38906 is designed to regulate refrigerant flow in automotive air conditioning systems. Engineered for vehicles using R134a refrigerant, this brass TXV valve ensures consistent superheat control for efficient cooling performance in select Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Constructed from durable brass for long-lasting operation
• Compatible with R134a refrigerant systems
• TXV (Thermostatic Expansion Valve) type for precise refrigerant metering
• Superheat rating of 8.0 for optimal system efficiency
• Part number 38906 for accurate identification and fitment

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line from Four Seasons focuses on delivering precise refrigerant flow control components for automotive HVAC systems. This line includes TXV valves like part 38906, designed to maintain proper superheat levels and improve air conditioning system reliability. The valves are engineered to meet OEM specifications for select vehicle makes and models, ensuring compatibility and performance.

Product Details and Specifications

The Four Seasons 38906 A/C Expansion Valve is a thermostatic expansion valve (TXV) made from brass, suitable for vehicles that use R134a refrigerant. It features a superheat setting of 8.0, which helps maintain the correct refrigerant vaporization rate inside the evaporator. This precise control prevents compressor damage and improves overall system efficiency. The valve is compatible with Buick Achieva, Chevrolet Corsica, Oldsmobile Skylark, and Pontiac Grand Am models, providing a direct replacement for worn or faulty expansion valves in these vehicles.

Common Applications and Issues Addressed

• Regulates refrigerant flow to prevent evaporator freeze-up
• Maintains proper superheat to avoid compressor overheating
• Improves air conditioning cooling performance in Buick Achieva and Chevrolet Corsica
• Prevents inconsistent cabin temperatures in Oldsmobile Skylark and Pontiac Grand Am
• Replaces malfunctioning or leaking expansion valves in R134a systems

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 38906, ensure the A/C system is properly evacuated and recharged with R134a refrigerant. Verify compatibility with the vehicle’s make and model before installation. Handle the brass valve carefully to avoid damage to the sensing bulb and valve body. It is recommended to replace the receiver/drier or accumulator during the installation to maintain system integrity.

Quality Assurance and Warranty

Four Seasons Expansion Valves are manufactured to meet or exceed OEM standards for durability and performance. Part number 38906 undergoes rigorous quality control to ensure reliable operation in HVAC systems. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship, providing confidence in the product’s longevity and function.