Four Seasons 66773 A/C Refrigerant Discharge Hose

Reliable A/C Refrigerant Discharge Hose for Audi and Volkswagen

The Four Seasons Hose Assembly part number 66773 is designed to maintain optimal air conditioning performance in select Audi and Volkswagen models. Engineered for high system pressure and compatibility with R134-a refrigerant, this discharge hose ensures efficient refrigerant flow and system reliability.

• Constructed from durable aluminum and rubber materials
• Compatible with R134-a refrigerant systems
• Includes gasket and fittings for secure connections
• Features a switch service port with 7/16" - 20 size
• Designed without bracket or muffler for streamlined installation
• O-ring set included with two green O-rings (part number 24661)
• Original equipment replacement for reliable fit and function
• Suction end equipped with P-nut fitting

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on delivering high-quality hose assemblies tailored for HVAC systems in vehicles. This product line emphasizes durability and precise fitment, providing components like the A/C refrigerant discharge hose that meet or exceed original equipment specifications. The 66773 hose assembly is part of this line, offering a dependable solution for maintaining proper refrigerant discharge in Audi and Volkswagen air conditioning systems.

Detailed Product Description

The Four Seasons 66773 A/C refrigerant discharge hose is engineered to handle high system pressures typical in modern automotive air conditioning systems. Constructed from a combination of aluminum and rubber, it balances flexibility with strength to withstand thermal expansion and vibration. This hose is designed specifically for use with R134-a refrigerant, ensuring compatibility with the cooling systems of Audi A3, A3 Quattro, Eos, Golf, Golf City, Golf R, GTI, and Jetta models. The included gasket and fittings provide a secure, leak-resistant connection, while the integrated switch service port allows for convenient system diagnostics. The hose assembly does not include a bracket or muffler, simplifying installation in vehicles where these components are not required.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant discharge hoses
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper refrigerant flow to improve air conditioning efficiency
• Maintaining system pressure integrity in high-pressure A/C systems
• Ensuring compatibility with R134-a refrigerant in Audi and Volkswagen models

Installation Notes and Tips

When installing the Four Seasons 66773 hose assembly, ensure the system is fully depressurized and evacuated before removal of the old hose. Verify that the included green O-rings (part number 24661) are properly seated to prevent leaks. The P-nut fitting on the suction end should be tightened to manufacturer specifications. Since this hose assembly does not include a bracket or muffler, confirm that existing mounting points and supports are intact and secure. The switch service port facilitates system testing but does not include a switch; ensure compatibility with your vehicle’s diagnostic equipment.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet or exceed original equipment standards, providing reliable performance and fitment. The 66773 hose assembly is an original equipment replacement part, ensuring compatibility with specified Audi and Volkswagen models. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.