Four Seasons 55778 A/C Refrigerant Discharge / Suction Hose Assembly

Overview of Four Seasons Hose Assembly 55778

The Four Seasons Hose Assembly 55778 is designed specifically for Ford Aerostar vehicles, providing reliable A/C refrigerant discharge and suction hose functionality. Constructed with durable aluminum and rubber materials, this hose assembly supports R134a refrigerant systems and includes essential components for efficient HVAC operation.

• Compatible with Ford Aerostar models
• Constructed from aluminum and rubber for durability
• Designed for R134a refrigerant type
• Includes green O-rings and spring O-ring seals
• Features female and male springlock fittings
• Equipped with a switch service port and muffler
• O.E. replacement part ensuring proper fit and function

Detailed Product Features and Specifications

This Four Seasons Hose Assembly 55778 belongs to the Hose Assembly product line, which focuses on delivering precise HVAC hose and pipe solutions for automotive air conditioning systems. The assembly combines aluminum and rubber materials to withstand pressure and temperature variations typical in A/C systems. It supports R134a refrigerant, the standard for many modern vehicles, including the Ford Aerostar.

The hose assembly includes multiple green O-rings (part numbers 24668, 24672, 24606) and a spring O-ring (24218) to ensure leak-free connections. The discharge end features a 0.500 inch (12.7 mm) female springlock fitting, while the suction end has a 0.750 inch (19.05 mm) male springlock fitting. This assembly also includes a switch service port and a muffler but does not come with fittings or a bracket. It is designed as an O.E. replacement part, ensuring compatibility and performance consistent with original equipment.

Applications and Common Issues Addressed

• Replacement of worn or damaged A/C refrigerant discharge and suction hoses on Ford Aerostar vehicles
• Resolving refrigerant leaks caused by degraded O-rings or hose material
• Restoring proper refrigerant flow and pressure in the A/C system
• Eliminating noise and vibration with the included muffler
• Ensuring accurate system pressure monitoring via the switch service port

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 55778, ensure all old hoses and seals are fully removed to prevent leaks. Verify that the green O-rings and spring O-ring seals are properly seated to maintain system integrity. The female and male springlock fittings require secure engagement to avoid refrigerant loss. Since fittings and brackets are not included, reuse existing hardware or source compatible components as needed. The included switch service port facilitates pressure monitoring during installation and servicing.

Quality Assurance and Warranty

Four Seasons manufactures this hose assembly to meet or exceed original equipment standards for the Ford Aerostar. The part number 55778 is an O.E. replacement, ensuring fit and function align with factory specifications. The product includes all necessary O-rings and seals to maintain system reliability. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.