Global Parts 3411273 A/C Expansion Valve - Rear

A/C Expansion Valve for Rear HVAC Service

Global Parts 3411273 is an A/C expansion valve for rear HVAC applications. It regulates refrigerant flow before the evaporator so the system can use cooling capacity efficiently in service-replacement repairs.

Key Features

• Expansion valve/orifice tube style flow restrictor for A/C systems
• Helps meter refrigerant before the evaporator
• Direct replacement part for rear HVAC service on select GM vehicles
• Global Parts part number 3411273
• Cross-references Four Seasons 38806 for the same application

Product Details

This A/C expansion valve is used in rear air conditioning systems on select Chevrolet Astro, Chevrolet Lumina APV, GMC Safari, Oldsmobile Silhouette, and Suburban models. Global Parts 3411273 slows refrigerant entering the evaporator so the system can absorb heat more effectively during normal operation. It is a practical replacement when servicing rear HVAC components on 1990-1993 Chevrolet Astro and GMC Safari, as well as 1991-1993 Chevrolet Lumina APV and related GM rear A/C applications.

What It Helps Address

• Weak rear A/C cooling performance
• Incorrect refrigerant metering at the evaporator
• Service-related contamination in the expansion valve
• Restricted refrigerant flow in rear HVAC circuits

Installation Notes

Verify the vehicle’s rear HVAC configuration before ordering. This part is listed for rear position applications only, including 1990 Chevrolet Astro, rear; 1990 GMC Safari, rear; 1991-1993 Chevrolet Astro, rear; 1991-1993 Chevrolet Lumina APV, rear; 1991-1993 GMC Safari, rear; 1992-1993 Chevrolet C1500 Suburban, rear; 1992-1993 Chevrolet C2500 Suburban, rear; 1992-1993 Chevrolet K1500 Suburban, rear; 1992-1993 Chevrolet K2500 Suburban, rear; 1992-1993 GMC C1500 Suburban, rear; 1992-1993 GMC C2500 Suburban, rear; 1992-1993 GMC K1500 Suburban, rear; 1992-1993 GMC K2500 Suburban, rear; and 1992-1993 Oldsmobile Silhouette, rear. Global Parts recommends replacing the expansion valve/orifice tube whenever the A/C system is serviced.

Quality Assurance

Global Parts supplies replacement HVAC components for automotive repair applications. Part number 3411273 is built for the listed GM rear A/C fitments and is referenced against common aftermarket numbers for application matching.