Four Seasons 66161 A/C Liquid Line with Orifice Tube

Overview of Four Seasons Hose Assembly 66161

The Four Seasons Hose Assembly 66161 is a precision-engineered A/C liquid line designed for reliable HVAC performance. Specifically compatible with Chevrolet and GMC heavy-duty trucks, this hose assembly ensures proper refrigerant flow and system efficiency.

• Constructed from durable aluminum material
• Includes serviceable orifice tube and gasket seals
• Equipped with R134a refrigerant quick disconnect service port
• Features male liquid line with P-nut fittings and bracket for secure installation
• OEM replacement part for Chevrolet Silverado 2500 HD, 3500, Sierra 2500 HD, and 3500 models

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on delivering complete hose assemblies for automotive HVAC systems. This line integrates essential components such as orifice tubes, service ports, and fittings into a single assembly, simplifying installation and maintenance. The 66161 part exemplifies this approach by combining a liquid line hose with a serviceable orifice tube and included mounting bracket, designed to meet OEM specifications for heavy-duty Chevrolet and GMC trucks.

Detailed Product Description

The 66161 hose assembly is crafted from aluminum to resist corrosion and withstand high-pressure refrigerant flow. It is designed for use with R134a refrigerant and includes two slimline washer O-rings (part number 24402) to ensure a tight seal. The assembly features a male liquid line with P-nut fittings on both suction and liquid ends, facilitating secure connections. A service port with a 13mm-16mm R134a quick disconnect allows for easy system servicing. Additionally, the included bracket and fittings provide a stable and OEM-compliant installation. The integrated orifice tube regulates refrigerant flow, maintaining system efficiency and protecting the compressor.

Common Applications and Issues Addressed

• Replacement of worn or leaking A/C liquid lines in Chevrolet Silverado 2500 HD and 3500 models
• Repair of HVAC system refrigerant leaks due to damaged or faulty hose assemblies
• Restoration of proper refrigerant flow and pressure regulation with integrated orifice tube
• Upgrade or maintenance of GMC Sierra 2500 HD and 3500 A/C systems requiring OEM-quality parts
• Resolution of service port access issues with included R134a quick disconnect port

Installation Notes and Tips

• Ensure compatibility with Chevrolet Silverado 2500 HD, 3500 and GMC Sierra 2500 HD, 3500 models before installation
• Use the included slimline washer O-rings to prevent refrigerant leaks
• Secure the hose assembly using the provided bracket to avoid vibration damage
• Check the service port for proper sealing after installation
• Follow manufacturer HVAC system service procedures when replacing the orifice tube

Quality Assurance and Warranty

Four Seasons manufactures the 66161 hose assembly to meet or exceed OEM standards for durability and performance. This part is an exact replacement designed for heavy-duty Chevrolet and GMC trucks, ensuring reliable operation within the HVAC system. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.