Four Seasons 55684 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 55684

The Four Seasons Hose Assembly 55684 is designed specifically for the Lexus LS400 HVAC system. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow, maintaining optimal air conditioning performance in your vehicle.

• Constructed from durable aluminum and rubber materials
• Features a P-nut fitting on both suction ends for secure connections
• Includes two green O-rings (part number 24682) for proper sealing
• Compatible with R134-a refrigerant systems
• Includes necessary fittings and gasket for installation
• OE replacement part designed without a service port or muffler

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing complete hose assemblies for automotive HVAC systems. These assemblies are engineered to meet original equipment specifications, ensuring proper fit and function. The 55684 suction hose assembly is part of this line, offering a direct replacement for the Lexus LS400’s low-pressure refrigerant suction line without the need for additional modifications.

Detailed Product Description

This A/C refrigerant suction hose assembly combines aluminum and rubber materials to provide durability and flexibility under varying temperature and pressure conditions. The P-nut fittings on both ends ensure a secure and leak-free connection to the HVAC system. The included green O-rings (two pieces) and gasket help maintain a tight seal, preventing refrigerant loss. Designed for use with R134-a refrigerant, this hose assembly operates under low system pressure and does not include a service port or muffler, matching the original equipment specifications for the Lexus LS400.

Common Issues Addressed by This Hose Assembly

• Leaking refrigerant due to worn or damaged suction hoses
• Reduced A/C cooling efficiency from compromised hose seals
• Corrosion or cracking in original suction line components
• Failure of low-pressure refrigerant flow affecting system performance
• Replacement of OEM suction hose to restore proper HVAC function

Installation Notes and Tips

• Ensure the system is fully evacuated of refrigerant before removal
• Inspect fittings and O-rings for damage and replace as needed
• Use proper torque specifications for P-nut fittings to avoid leaks
• Verify compatibility with Lexus LS400 HVAC system prior to installation
• Check for any signs of wear or damage on adjacent components during replacement

Quality Assurance and Warranty

The Four Seasons Hose Assembly 55684 is an OE replacement part manufactured to meet or exceed original equipment standards. It includes all necessary fittings and seals to ensure a proper installation. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.