Four Seasons 66621 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66621

The Four Seasons Hose Assembly 66621 is designed specifically for BMW 328d and 328d xDrive models. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow within your vehicle's HVAC system, maintaining optimal air conditioning performance.

• Constructed from durable aluminum and rubber materials
• Equipped with P-nut fittings on both ends for secure connections
• Compatible with R134a refrigerant systems
• Includes green round O-rings and necessary fittings for installation
• Features a service port sized at 13 mm for low-side access
• OE replacement part ensuring proper fit and function
• Part of the Four Seasons Hose Assembly product line

Four Seasons Hose Assembly Product Line Details

The Hose Assembly line by Four Seasons focuses on delivering complete hose solutions for HVAC systems. These assemblies combine high-quality materials like aluminum and rubber with pre-installed fittings and seals, simplifying installation and ensuring system integrity. The 66621 suction hose assembly is engineered to meet OEM specifications, providing a direct replacement for the BMW 328d and 328d xDrive low-pressure refrigerant line.

Product Features and Specifications

This A/C refrigerant suction hose is designed to handle low system pressure and is compatible with R134a refrigerant. Both ends feature P-nut fittings, facilitating a secure and leak-free connection. The assembly includes green round O-rings ([24635] and [24681]) to ensure proper sealing. A service port is integrated without a switch, allowing for easy maintenance and refrigerant charging. The hose assembly does not include a bracket or muffler, focusing solely on the suction line function.

Common Applications and Issues Addressed

• Replacement of worn or damaged suction lines in BMW 328d and 328d xDrive A/C systems
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper refrigerant flow to improve air conditioning efficiency
• Addressing low-pressure system failures related to hose integrity
• Facilitating maintenance with included service port for refrigerant access

Installation Notes and Tips

Ensure the vehicle is depressurized and the A/C system is properly evacuated before removing the old suction hose. Verify that the included green O-rings are correctly seated on the P-nut fittings to prevent leaks. The 13 mm service port allows for convenient refrigerant charging and pressure checks during installation. No bracket or muffler is included, so retain or replace mounting hardware as needed. This hose assembly is a direct OE replacement, designed for straightforward installation on BMW 328d and 328d xDrive models.

Quality Assurance and Warranty

Four Seasons Hose Assembly 66621 meets OEM standards for fit, form, and function. The use of aluminum and rubber materials ensures durability and resistance to refrigerant and environmental factors. This part includes all necessary fittings and seals for a complete installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality controls to support reliable HVAC system performance.