Global Parts 3411249 A/C Orifice Tube - Front

A/C Orifice Tube for GM HVAC Service

Global Parts 3411249 is a black T-style A/C orifice tube used in GM air conditioning systems to regulate refrigerant flow before the evaporator. It is a direct replacement for service work on Chevrolet Tahoe, GMC Yukon, and Silverado applications where proper refrigerant metering is critical.

• T-style black orifice tube design
• Slows refrigerant before the evaporator for controlled cooling performance
• Recommended replacement during A/C system service
• Compatible with a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, and Hummer applications
• Cross-reference example: DENSO Auto Parts 475-4105

Detailed Product Overview

This Global Parts A/C orifice tube, part number 3411249, is built for vehicles using a fixed orifice tube HVAC layout. By metering refrigerant flow ahead of the evaporator, it helps the system maintain the correct pressure drop needed for efficient cooling. The black T-style design matches common GM service applications, including Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade models.

For fitment-based searches, this part is commonly selected for 2000-2007 GMC Yukon XL 1500, front; 2004-2006 Chevrolet Suburban 1500, front; and 2001-2007 GMC Yukon XL 1500, front. It also appears in service coverage for Chevrolet Tahoe, GMC Yukon, and Chevrolet Silverado 2500 HD applications. Part number 3411249 is a practical replacement when servicing the A/C system on GM trucks and SUVs.

Common Problems This Part Addresses

• Restricted refrigerant flow through a worn or contaminated orifice tube
• Reduced cabin cooling performance
• Uneven A/C operation after compressor or evaporator service
• Debris buildup in the HVAC refrigerant circuit
• Need for a service replacement during A/C repair

Installation Notes and Tips

Replace the orifice tube during A/C system service, especially after compressor failure or when the refrigerant circuit has been opened. Verify the vehicle uses an orifice tube-style system and confirm the correct application by year, make, model, and position before installation. For GM trucks and SUVs such as Chevrolet Tahoe and GMC Yukon, check the service notes carefully because some applications list front placement and optional auto-adjusting tube alternatives.

Quality Assurance

Global Parts recommends replacing the expansion valve or orifice tube each time the A/C system is serviced. This part is listed with broad interchange coverage across OE and aftermarket references, including DENSO Auto Parts 475-4105 and UAC EX5378C, supporting application matching for service repairs.