Four Seasons 55077 A/C Refrigerant Discharge / Suction Hose Assembly

Four Seasons 55077 A/C Hose Assembly

Four Seasons 55077 is an OE replacement A/C refrigerant discharge and suction hose assembly for classic Chevrolet and GMC truck and SUV applications. Built with aluminum and rubber construction, it is made for R134a systems and includes the required seals for a direct service replacement.

Key Features

• Part number 55077 from Four Seasons Hose Assembly line
• Discharge and suction line design for HVAC service
• Aluminum / rubber construction for factory-style routing and flexibility
• R134a refrigerant type
• Female O-ring UNF connections on both ends
• Manifold design with muffler
• O-rings included; gasket or seal included
• OE replacement part
• Fits 1973-1975 Chevrolet Blazer, 1973-1975 Chevrolet C10 Suburban, 1973-1975 Chevrolet C20 Suburban, 1973-1975 GMC Jimmy, 1975 Chevrolet C10, 1975 Chevrolet C20, 1975 Chevrolet C30, 1975 Chevrolet K10, 1975 Chevrolet K20, 1975 Chevrolet K5 Blazer, and 1975 Chevrolet K10 Suburban / K20 Suburban applications

Product Details

This Four Seasons hose assembly is built for vehicles using a discharge and suction line layout with female O-ring fittings at the suction and discharge ends. The manifold and muffler configuration supports factory-style HVAC routing, while the included O-rings and seal help simplify replacement of a worn or leaking A/C hose on Chevrolet C10, C20, C30, K10, K20, K5 Blazer, Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, and GMC Jimmy models.

Four Seasons 55077 cross-references Gates 34704 for the same application.

Common Repair Uses

• Replacing a leaking A/C refrigerant hose assembly
• Restoring refrigerant flow in an R134a HVAC system
• Repairing cracked, corroded, or aged aluminum/rubber hose sections
• Addressing poor A/C performance caused by hose seepage
• Servicing factory-style discharge and suction line connections

Installation Notes

Verify the vehicle’s original hose routing, end style, and service-port configuration before installation. This assembly is supplied without fittings, without a bracket, and without a service port or switch port, so transfer or reuse only the components specified by the vehicle service procedure. Always replace the O-rings at the connection points and evacuate and recharge the system with the correct R134a refrigerant charge after repair.

Quality Assurance

Four Seasons is a recognized HVAC parts brand focused on replacement components for automotive air conditioning systems. Part number 55077 is an OE replacement hose assembly built to match the listed applications and connection style.