Four Seasons 39271 A/C Expansion Valve - Front

Overview of Four Seasons Expansion Valve 39271

The Four Seasons Expansion Valve 39271 is designed to regulate refrigerant flow in automotive air conditioning systems. Engineered from durable aluminum, this block-type A/C expansion valve is compatible with R134a refrigerant and fits select Acura, Cadillac, and Honda models including the MDX, Pilot, Ridgeline, and SRX.

• Constructed from corrosion-resistant aluminum material
• 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 performance

Four Seasons Expansion Valve Product Line Details

The Expansion Valve product line from Four Seasons focuses on precise refrigerant flow control within vehicle HVAC systems. This line includes block-type valves like part number 39271, which feature captured o-ring fittings to ensure leak-free connections. Designed to meet OEM standards, these valves support efficient air conditioning operation in various Acura, Cadillac, and Honda vehicles.

Technical Description and Specifications

Part number 39271 is an aluminum A/C expansion valve designed for use with R134a refrigerant. It features a block-type construction with two mounting holes for secure attachment. Both suction inlet and outlet fittings are female with No. 12 thread diameter, while liquid inlet and outlet fittings are female with No. 6 and No. 10 thread diameters respectively. The valve uses captured green o-ring seals ([24109] and [24626]) on both liquid inlet and outlet connections to prevent refrigerant leaks. The liquid inlet size measures 0.4 inches (10.15 mm), and the liquid outlet size is 0.61 inches (15.5 mm). This valve is designed to meet or exceed OEM requirements, ensuring compatibility and durability.

Applications and Common Issues Addressed

• Regulates refrigerant flow in Acura MDX, Honda Pilot, Ridgeline, and Cadillac SRX A/C systems
• Prevents improper refrigerant metering that can cause inefficient cooling
• Resolves issues related to fluctuating cabin temperatures
• Addresses A/C system leaks due to worn or damaged expansion valves
• Helps restore proper pressure balance within the HVAC system

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 39271, ensure the vehicle’s A/C system is fully evacuated and depressurized. Use proper tools to avoid damaging the aluminum fittings and o-rings. Verify that the captured o-rings are seated correctly to prevent leaks. Tighten mounting bolts securely using the two provided mounting holes. After installation, recharge the system with R134a refrigerant and test for proper operation and leak-free performance.

Quality Assurance and Warranty

This Four Seasons Expansion Valve meets or exceeds OEM specifications for fit, form, and function. Manufactured with corrosion-resistant aluminum and equipped with durable o-ring seals, it is designed for long-lasting service. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.