Four Seasons 39399 A/C Expansion Valve

Reliable A/C Expansion Valve for BMW Models

The Four Seasons Expansion Valve 39399 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for select BMW models, this aluminum block-type valve ensures precise temperature control and efficient A/C performance.

• Constructed from durable aluminum material with an aluminum finish
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with captured o-ring seals
• Meets or exceeds OEM specifications for reliable fit and function

Four Seasons Expansion Valve Product Line Overview

The Expansion Valve line by Four Seasons focuses on delivering dependable HVAC flow restrictors that maintain optimal refrigerant metering. This product line emphasizes OEM compatibility and quality materials, such as aluminum construction and captured o-ring fittings, to ensure leak-free operation and long service life. The 39399 valve is part of this line, tailored for precise control in BMW air conditioning systems.

Detailed Product Description

The Four Seasons 39399 A/C Expansion Valve is a block-type valve made from aluminum, designed to regulate refrigerant flow in R134a systems. It features female suction inlet and outlet fittings with No. 12 thread diameters, and female liquid inlet and outlet fittings with No. 8 and No. 10 thread diameters respectively. Both liquid inlet and outlet connections use captured o-ring seals to prevent leaks. The valve includes two mounting holes for secure attachment. This part meets or exceeds OEM standards, ensuring compatibility and reliable performance in BMW 1 Series M, 128i, 135i, 135is, 325xi, 328i, 328i xDrive, 328xi, 330xi, 335d, 335i, 335is, 335i xDrive, 335xi, M3, X1, X3, X4, and X5 models.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain consistent cabin temperature
• Prevents A/C system freezing or overheating
• Resolves uneven cooling or fluctuating air temperatures
• Eliminates refrigerant leaks caused by worn or damaged valves
• Restores proper pressure balance within the A/C system

Installation Notes and Tips

• Ensure system is evacuated and depressurized before removal
• Inspect and replace O-rings as needed to maintain seal integrity
• Use proper torque on mounting bolts to avoid damage
• Verify compatibility with your specific BMW model and refrigerant type
• Test A/C system operation after installation for proper cooling performance

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39399 is manufactured to meet or exceed OEM specifications, providing reliable fit and function. It includes two black and green O-rings for secure sealing. While specific warranty details vary, Four Seasons products typically come with a limited warranty against defects in material and workmanship to ensure customer confidence.