Global Parts 3411977 A/C Expansion Valve

A/C Expansion Valve for Infiniti HVAC Service

Global Parts 3411977 is an A/C expansion valve/orifice tube for HVAC service on select Infiniti models. It meters refrigerant flow before the evaporator so the system can use the refrigerant’s cooling capacity effectively. This part number 3411977 is a direct-fit option for common Infiniti M and Q70 applications.

Key Features

• Expansion valve/orifice tube design for refrigerant flow control
• Helps regulate refrigerant entering the evaporator
• Built for select Infiniti HVAC systems
• Cross-references Four Seasons 39459 and UAC EX10449C for the same application
• Part number: 3411977

Fitment Details

• Fits 2014-2019 INFINITI Q70, N/A
• Fits 2015-2019 INFINITI Q70L, N/A
• Fits 2012-2013 INFINITI M35h, N/A
• Fits 2011-2013 INFINITI M37, N/A
• Fits 2011-2013 INFINITI M56, N/A

What This Part Helps Address

• Weak cabin cooling caused by incorrect refrigerant metering
• Uneven evaporator performance in the A/C system
• Restricted refrigerant control at the expansion point
• HVAC service needs on Infiniti Q70, Q70L, M35h, M37, and M56 models

Installation Notes

Verify the vehicle year and model before ordering. Match the existing HVAC configuration and inspect the system for contamination, leaks, or compressor issues before replacing the expansion valve. Proper evacuation and recharge procedures are required after installation.

Quality Assurance

Global Parts 3411977 is built as an OE-style HVAC replacement for the listed Infiniti applications and follows the manufacturer’s refrigerant-flow specification for this part type.