Four Seasons 56679 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 56679

The Four Seasons Hose Assembly 56679 is designed specifically for the HVAC system of INFINITI and Nissan vehicles, including the Pathfinder and QX4 models. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow with durable aluminum and rubber construction.

• Material: Aluminum and rubber for durability and flexibility
• End 1 Type: Flange connection
• End 2 Type: Captured green o-ring seal
• Refrigerant Type: Compatible with R134-a refrigerant
• Includes gasket, fittings, and bracket for secure installation
• Service port included with 13 mm size on the low-pressure side
• O-rings included: two green o-rings (part numbers 24681 and 24684)
• OE replacement part designed for direct fit
• Switch not included; hose assembly without muffler

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing complete hose assemblies for automotive HVAC systems. These assemblies combine high-quality materials and precise fittings to ensure proper refrigerant flow and system integrity. The 56679 part is part of this line, offering a ready-to-install suction line solution with included brackets and seals to maintain system pressure and prevent leaks.

Detailed Product Description

This A/C refrigerant suction hose assembly is engineered for low-pressure operation within the air conditioning system of INFINITI Pathfinder and Nissan QX4 vehicles. Constructed from aluminum and rubber, it balances strength and flexibility to withstand temperature variations and vibrations. The flange and captured o-ring ends provide secure, leak-resistant connections. Included fittings and a bracket facilitate proper mounting and integration into the existing HVAC system. The service port on the low-pressure side allows for maintenance and refrigerant charging without removing the hose.

Common Applications and Issues Addressed

• Replacement of worn or cracked suction hoses causing refrigerant leaks
• Restoring proper refrigerant flow in the A/C system for effective cooling
• Fixing low-pressure side failures that reduce system efficiency
• Eliminating leaks due to damaged or missing seals and o-rings
• Upgrading OEM parts with a direct-fit replacement for reliable performance

Installation Notes and Tips

• Ensure compatibility with INFINITI Pathfinder and Nissan QX4 models before installation
• Use included green o-rings (part numbers 24681 and 24684) to maintain proper sealing
• Check that the bracket is securely mounted to prevent hose movement
• Verify the service port is accessible for refrigerant charging and diagnostics
• Do not reuse old fittings or seals to avoid leaks

Quality Assurance and Warranty

The Four Seasons Hose Assembly 56679 is an OE replacement part manufactured to meet or exceed original equipment specifications. It includes all necessary fittings, gaskets, and seals to ensure a proper fit and function. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship, supporting long-term reliability in your vehicle's HVAC system.