Four Seasons 66620 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66620

The Four Seasons Hose Assembly 66620 is designed specifically for BMW models including the 528i, 528i xDrive, 535d, 535d xDrive, and 740Ld xDrive. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow within your vehicle's HVAC system.

• Constructed from durable aluminum and rubber materials
• Equipped with P-nut fittings on both ends for secure connections
• Compatible with R134a refrigerant systems
• Includes gasket, fittings, and bracket for installation
• OEM replacement part designed for suction line applications

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on providing complete hose solutions for automotive HVAC systems. This line includes assemblies that combine durable materials and necessary fittings to simplify installation and ensure system integrity. The 66620 part is a direct replacement suction line assembly, engineered to meet the specifications required by BMW vehicles using R134a refrigerant.

Detailed Product Description

The Four Seasons 66620 A/C refrigerant suction hose assembly is constructed with a combination of aluminum and rubber to balance flexibility and durability. Both ends feature P-nut fittings, facilitating a secure and leak-resistant connection to the HVAC system. Designed for low-pressure refrigerant flow, this suction line is compatible with R134a refrigerant commonly used in BMW models such as the 528i and 535d series. The assembly includes two green O-rings (part number 24682), a gasket, fittings, and a mounting bracket to ensure proper fitment and ease of installation. This hose assembly does not include a muffler or service port, aligning with original equipment specifications.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper low-pressure refrigerant flow in BMW 528i and 535d HVAC systems
• Eliminating poor A/C performance due to compromised suction lines
• Maintaining system integrity after component failure or during HVAC system repairs

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66620, ensure all fittings and O-rings are properly seated to prevent refrigerant leaks. The included bracket should be securely mounted to maintain hose positioning and avoid vibration damage. Since this assembly does not include a service port or muffler, verify compatibility with your vehicle’s existing HVAC components. It is recommended to replace the O-rings during installation to maintain a proper seal. Professional installation is advised to ensure system pressure integrity and refrigerant handling safety.

Quality Assurance and Warranty

Four Seasons Hose Assembly 66620 is an OEM replacement part designed to meet or exceed original equipment specifications for BMW vehicles. The assembly includes all necessary fittings and seals to ensure a reliable installation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.