Four Seasons 38644 A/C Orifice Tube - Front

Overview of Four Seasons Orifice Tube 38644

The Four Seasons Orifice Tube 38644 is a precision-engineered A/C flow restrictor designed for select Cadillac, Chevrolet, GMC, and Hummer models. This gray porous style orifice tube measures 3.8 inches in length with a 0.5-inch outside diameter, ensuring optimal refrigerant flow and system efficiency.

• Length: 3.8 inches
• Color: Gray
• Tube Outside Diameter: 0.5 inches
• Orifice Diameter: 0.072 inches
• Style: Porous
• Type: A/C Orifice Tube
• Pack Quantity: 1

Product Line Details: Four Seasons Orifice Tube

The Four Seasons Orifice Tube product line specializes in expansion devices that regulate refrigerant flow within automotive air conditioning systems. The 38644 part is part of this line, designed to maintain proper pressure and temperature balance in the evaporator by restricting refrigerant flow. This ensures consistent cooling performance and protects the A/C system components from damage caused by improper refrigerant flow.

Detailed Product Description

This A/C orifice tube features a porous style design with a 0.072-inch orifice diameter, which controls the refrigerant expansion from high to low pressure within the system. The 0.5-inch outside diameter tube and 3.8-inch length are engineered to fit specific vehicle models, providing reliable and consistent performance. The gray color helps with easy identification during installation or maintenance.

Compatible Vehicles and Applications

This Four Seasons Orifice Tube 38644 is compatible with a range of vehicles including Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche 1500 and 2500, Silverado 1500, 2500, and 3500 series, GMC Sierra 1500, 2500, and 3500 series, Suburban 1500 and 2500, Tahoe, Yukon, Yukon XL 1500 and 2500, and Hummer H2 models. It is designed specifically for these makes and models to ensure proper fit and function.

Common Issues Addressed by This Orifice Tube

• Inconsistent or weak air conditioning cooling
• Refrigerant flow restrictions causing system inefficiency
• Pressure imbalances leading to compressor strain
• Potential evaporator freeze-up due to improper expansion
• System contamination or blockage within the A/C lines

Installation Notes and Tips

When installing the Four Seasons Orifice Tube 38644, ensure the system is fully evacuated and free of contaminants before insertion. The porous style orifice tube should be installed in the correct orientation as specified by the vehicle manufacturer. Use proper tools to avoid damage to the tube or surrounding components. It is recommended to replace the orifice tube during A/C system service or when diagnosing cooling issues related to refrigerant flow.

Quality Assurance and Warranty

Four Seasons manufactures the 38644 orifice tube to meet or exceed OEM specifications for durability and performance. This part undergoes rigorous quality control to ensure consistent operation within the specified vehicle applications. Warranty coverage details should be confirmed with the product documentation or manufacturer, as it may vary by region or distributor.