Four Seasons 55489 A/C Refrigerant Discharge / Suction Hose Assembly

Four Seasons 55489 A/C Hose Assembly

The Four Seasons 55489 hose assembly is an OE replacement A/C refrigerant discharge and suction line for select Chevrolet and GMC trucks and SUVs. Built with aluminum and rubber construction for R134a systems, it restores the refrigerant path between major HVAC components on applications such as the Chevrolet C10, K5 Blazer, and GMC Jimmy.

Key Features

• Brand: Four Seasons Hose Assembly
• Part number: 55489
• Type: A/C refrigerant discharge and suction hose assembly
• Material: aluminum / rubber
• Refrigerant type: R134a
• OE replacement design for factory-style service
• Manifold included
• Gasket or seal included
• Female O-ring discharge and suction end styles
• UNF O-ring connections
• O-rings included
• Fits select Chevrolet and GMC applications from 1978-1982

Product Details

Four Seasons Hose Assembly 55489 is built for HVAC service on older GM truck and SUV platforms that use an R134a refrigerant layout. The aluminum and rubber construction balances routing flexibility with the rigidity needed for secure line placement, while the OE replacement design supports factory-style fitment on the listed Chevrolet and GMC applications. This assembly is specified as a discharge and suction line with female O-ring ends, a manifold, and included seals and O-rings for the connection points.

Compatible vehicle coverage includes Fits 1981-1982 Chevrolet C10, N/A; Fits 1981-1982 Chevrolet C10 Suburban, N/A; Fits 1982 Chevrolet C15, N/A; Fits 1981-1982 Chevrolet C20, N/A; Fits 1981-1982 Chevrolet C20 Suburban, N/A; Fits 1981-1982 Chevrolet C30, N/A; Fits 1981-1982 Chevrolet K10, N/A; Fits 1981-1982 Chevrolet K10 Suburban, N/A; Fits 1981-1982 Chevrolet K20, N/A; Fits 1981-1982 Chevrolet K20 Suburban, N/A; Fits 1981-1982 Chevrolet K30, N/A; Fits 1981-1982 Chevrolet K5 Blazer, N/A; Fits 1981-1982 GMC C1500, N/A; Fits 1981-1982 GMC C1500 Suburban, N/A; Fits 1981-1982 GMC C2500, N/A; Fits 1981-1982 GMC C2500 Suburban, N/A; Fits 1981-1982 GMC C3500, N/A; Fits 1981-1982 GMC Jimmy, N/A; Fits 1981-1982 GMC K1500, N/A; Fits 1981-1982 GMC K1500 Suburban, N/A; Fits 1981-1982 GMC K2500, N/A; Fits 1981-1982 GMC K2500 Suburban, N/A; Fits 1981-1982 GMC K3500, N/A; and Fits 1978-1979 Chevrolet El Camino, N/A.

This part cross-references Gates 34719 and National 200851 for the same application.

Common Repair Uses

• Leaking or cracked A/C refrigerant hose on Chevrolet C10 and GMC C1500 platforms
• Damaged discharge or suction line connections at the compressor or manifold
• Loss of cooling performance caused by refrigerant line seepage
• Corrosion or age-related deterioration in original HVAC hose assemblies
• Service replacement for select Chevrolet El Camino, K5 Blazer, and GMC Jimmy A/C systems

Installation Notes

Verify the vehicle’s refrigerant system layout, end style, and port configuration before installation. This assembly is listed without a switch port, without a service port, without a bracket, and without fittings, so reuse or source any required vehicle-specific mounting or connection components separately. Replace the sealing surfaces as needed and confirm proper O-ring seating before evacuating and recharging the system with R134a.

Quality Assurance

Four Seasons supplies HVAC replacement parts for OE-style service applications, and this hose assembly is listed as an OE replacement part for the specified GM vehicles. The included gasket or seal and O-rings support proper connection sealing when installed correctly.