Four Seasons 66049 A/C Liquid Line with Orifice Tube

Reliable A/C Liquid Line Hose Assembly for Chevrolet and GMC Trucks

The Four Seasons Hose Assembly part number 66049 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. This liquid line hose assembly with an orifice tube ensures proper refrigerant flow and system performance for vehicles using R134a refrigerant.

Key Features of Four Seasons Hose Assembly 66049

• Compatible with R134a refrigerant systems
• Includes gasket or seal for secure connections
• Equipped with a service port and switch service port for easy maintenance
• Features a serviceable orifice tube integrated into the liquid line
• High side service port with 16 mm size for standard servicing tools
• Designed without a bracket for flexible installation
• Suction end uses a P-nut fitting for reliable sealing
• O.E. replacement part ensuring factory-level fit and function

Detailed Description of the Four Seasons Hose Assembly

This Four Seasons Hose Assembly from the Hose Assembly product line is engineered to meet original equipment specifications for Chevrolet and GMC heavy-duty trucks. The assembly includes a liquid line hose with an integrated orifice tube, which regulates refrigerant flow and pressure within the A/C system. The inclusion of a service port and switch service port on the high side allows for straightforward diagnostics and refrigerant charging. The 16 mm service port size is compatible with common A/C service tools, facilitating maintenance and repairs. The hose assembly comes with a gasket or seal to ensure leak-free connections, and the P-nut fitting on the suction end provides a secure attachment point. This part is designed without a mounting bracket, allowing for versatile installation in the vehicle’s HVAC system.

Applications and Common Issues Addressed

• Replacement of damaged or leaking A/C liquid line hoses in Chevrolet Sierra 2500 HD and 3500 HD
• Restoring proper refrigerant flow and pressure regulation in Silverado 2500 HD and 3500 HD A/C systems
• Fixing refrigerant leaks caused by worn or faulty orifice tubes
• Resolving issues related to service port accessibility for maintenance and recharging
• Upgrading to an O.E. replacement part to maintain factory performance standards

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66049, ensure the vehicle is compatible with R134a refrigerant systems. Use appropriate tools for the 16 mm service port and P-nut fittings to avoid damage. The included gasket or seal should be inspected and replaced if necessary to prevent leaks. Since this assembly does not include a bracket, verify mounting points and secure the hose properly to avoid vibration or contact with other components. It is recommended to evacuate and recharge the A/C system following manufacturer guidelines after installation.

Quality Assurance and Warranty Information

Four Seasons Hose Assembly 66049 is an O.E. replacement part, manufactured to meet or exceed original equipment standards for durability and performance. The Hose Assembly product line focuses on providing reliable HVAC hose and pipe solutions for automotive applications. This part includes all necessary seals and service ports to facilitate professional-grade repairs. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region and distributor.