Four Seasons 39273 A/C Expansion Valve

Four Seasons 39273 A/C Expansion Valve

The Four Seasons 39273 expansion valve is a TXV-style A/C flow restrictor built for R134A systems and finished in brass. It is listed for 1990-1996 INFINITI Q45 applications, making it a direct-fit service part for restoring refrigerant control in the HVAC system.

Four Seasons Expansion Valve parts are used to regulate refrigerant flow into the evaporator, helping the air conditioning system maintain proper cooling performance. This part number, 39273, is a focused replacement for vehicles that require a brass TXV calibrated for R134A service.

Key Features

• Brand: Four Seasons
• Part number: 39273
• Part type: A/C expansion valve
• TXV design for refrigerant metering
• Brass construction
• Refrigerant type: R134A
• Super heat setting: -0.5
• Fits 1990-1996 INFINITI Q45, N/A

Detailed Description

This Four Seasons 39273 A/C expansion valve is engineered for HVAC systems that use an expansion valve to control refrigerant delivery into the evaporator. In 1990-1996 INFINITI Q45 models, the valve helps maintain the refrigerant flow balance needed for stable vent temperatures and consistent A/C operation. If you are replacing a worn or restricted valve, this TXV is a practical service part for the INFINITI Q45 platform.

This part cross-references UAC EX10048C for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Refrigerant flow restriction at the evaporator circuit
• Erratic A/C performance caused by a failing TXV
• Temperature control issues in R134A systems
• Service replacement needs for a 1990-1996 INFINITI Q45 A/C system

Installation Notes and Tips

Verify the vehicle’s refrigerant type and system layout before installation. Replace the expansion valve only after confirming the rest of the A/C system is clean and free of contamination, and follow proper evacuation and recharge procedures after service. Match the valve to the listed application and confirm the part number 39273 before installation.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive air conditioning repairs, and this expansion valve is cataloged for the listed INFINITI Q45 applications. Confirm fitment by year, model, and refrigerant specification before ordering.