Global Parts 3411321 A/C Expansion Valve - Rear

Global Parts 3411321 A/C Expansion Valve

Global Parts 3411321 is an A/C expansion valve for rear HVAC applications on select Pontiac Montana and Oldsmobile Silhouette models. It meters refrigerant flow before the evaporator so the system can use cooling capacity more effectively.

Key Features

• Rear A/C expansion valve for HVAC refrigerant control
• Helps regulate refrigerant entering the evaporator
• Direct-fit service part for select GM minivans
• Recommended replacement during A/C system service
• Cross-references UAC EX5891C for the same application

Detailed Description

This Global Parts 3411321 expansion valve is used in rear air conditioning systems to reduce refrigerant pressure and control flow into the evaporator. That metering action supports efficient heat transfer and stable cooling performance. It fits 2001-2005 Pontiac Montana, rear, and 2001-2004 Oldsmobile Silhouette, rear. This part number 3411321 is also referenced for related service applications where the same valve design is specified.

Common Issues It May Address

• Weak rear A/C cooling output
• Irregular refrigerant flow at the evaporator
• System performance loss after A/C service
• Expansion valve wear or contamination
• Reduced cooling efficiency in Pontiac Montana and Oldsmobile Silhouette rear HVAC systems

Installation Notes and Tips

Verify the rear HVAC configuration before ordering. Replace the expansion valve during A/C service when the system has been opened, and inspect related components for contamination or restriction. Proper evacuation, leak checking, and refrigerant recharge are required after installation.

Quality Assurance

Global Parts recommends replacing the expansion valve/orifice tube each time the A/C system is serviced to help maintain proper refrigerant control and cooling performance.