Four Seasons 66334 A/C Refrigerant Liquid Hose

Overview of Four Seasons Hose Assembly 66334

The Four Seasons Hose Assembly 66334 is designed for high-pressure A/C refrigerant liquid line applications. Engineered with durable aluminum and rubber materials, this hose assembly is compatible with various BMW models, including the 228i, 320i, 328i, 335i, 428i, M3, and M4 series. It ensures reliable performance in R134a refrigerant systems.

• Constructed from aluminum and rubber for durability and flexibility
• Compatible with R134a refrigerant type
• Includes green O-rings (part number 24649) for secure sealing
• Equipped with a service port (M10x1.000) and switch service port (3/8" - 24)
• Designed for high-pressure A/C systems without a bracket
• Includes orifice tube and P-nut fitting suction end
• O.E. replacement part ensuring proper fit and function

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly product line focuses on providing reliable hose assemblies for automotive HVAC systems. This line includes components designed to meet or exceed original equipment specifications, ensuring compatibility and durability. The 66334 hose assembly is part of this line, offering a liquid line hose assembly solution without a bracket but with essential features like a switch port and included seals for efficient A/C refrigerant flow.

Detailed Product Description

This A/C refrigerant liquid hose assembly is built to handle high system pressures typical in modern BMW air conditioning systems. The combination of aluminum and rubber materials provides resistance to corrosion and flexibility to accommodate engine vibrations and movements. The inclusion of two green O-rings (part number 24649) ensures a tight seal to prevent refrigerant leaks. The hose assembly features a service port and a switch service port, facilitating maintenance and diagnostics. Its P-nut fitting suction end and integrated orifice tube support proper refrigerant flow and system performance. This hose assembly is an exact O.E. replacement, making it suitable for BMW models such as the 228i xDrive, 320i xDrive, 328i GT xDrive, 335is, 428i Gran Coupe, M2, M3, and M4.

Common Applications and Issues Addressed

• Replacement of worn or leaking A/C refrigerant liquid hoses
• Restoring proper refrigerant flow in BMW 3 Series and 4 Series models
• Fixing high-pressure system leaks caused by damaged hose assemblies
• Resolving A/C system pressure loss due to faulty seals or fittings
• Upgrading to a reliable hose assembly compatible with R134a refrigerant

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66334, ensure the system is fully depressurized and evacuated before removal of the old hose. Verify that the included green O-rings are properly seated to prevent leaks. The service port and switch port should be checked for tightness and proper connection. Since this assembly does not include a bracket, confirm that the hose is securely routed and supported to avoid contact with moving parts or excessive vibration. Use appropriate tools for the M10x1.000 service port and 3/8" - 24 switch port fittings.

Quality Assurance and Warranty

Four Seasons manufactures this hose assembly to meet original equipment standards, ensuring compatibility and durability for BMW HVAC systems. The part number 66334 is an O.E. replacement, providing confidence in fit and function. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.