Four Seasons 55455 A/C Refrigerant Discharge / Suction Hose Assembly

OE Replacement A/C Hose Assembly

Four Seasons 55455 is an OE replacement A/C refrigerant discharge and suction hose assembly for select Buick, Cadillac, Chevrolet, and Oldsmobile applications. It combines aluminum and rubber construction with R134a refrigerant compatibility for service on the listed vehicles.

This hose assembly is built as a manifold-style line with female O-ring discharge and suction ends, making it a direct-fit replacement for the original HVAC hose routing on covered applications such as the Chevrolet Caprice and Buick Roadmaster.

Key Features

• Brand: Four Seasons Hose Assembly
• Part number: 55455
• Type: A/C refrigerant discharge and suction line
• Material: aluminum / rubber
• Refrigerant type: R134a
• OE replacement design
• Manifold-style assembly
• Gasket or seal included
• O-rings included
• Switch service port provision included
• Female O-ring discharge and suction ends
• Fittings not included
• Bracket not included
• Without muffler

Detailed Description

Four Seasons 55455 is an OE-style A/C hose assembly engineered for the refrigerant discharge and suction circuit. It uses aluminum and rubber construction to match the original line layout while supporting R134a systems. The assembly includes the required seals and O-rings, and it is configured with a switch service port provision. This part cross-references Gates 34784 for the same application.

Fits 1991-1993 Buick Roadmaster, N/A; Fits 1992-1993 Cadillac Commercial Chassis, N/A, w/ Heavy Duty Cooling; Fits 1993 Cadillac Fleetwood, N/A, w/ Heavy Duty Cooling; Fits 1991-1993 Chevrolet Caprice, N/A; Fits 1991-1993 Chevrolet Caprice, N/A, Accumulator to Compressor; Fits 1991-1993 Chevrolet Commercial Chassis, N/A, Accumulator to Compressor; Fits 1992 Buick Roadmaster, N/A, Accumulator to Compressor; Fits 1991-1992 Chevrolet Commercial Chassis, N/A; Fits 1991-1992 Oldsmobile Custom Cruiser, N/A.

What This Part Helps Resolve

• A/C refrigerant leaks at the hose assembly
• Cracked or deteriorated rubber hose sections
• Corroded or damaged aluminum line sections
• Loss of refrigerant pressure in the discharge or suction circuit
• Service issues on R134a-equipped HVAC systems

Installation Notes and Tips

Verify the vehicle’s original hose routing, end style, and service port configuration before installation. Confirm the listed application for your Buick Roadmaster, Chevrolet Caprice, or other covered model, and transfer any required fittings from the original setup if applicable, since fittings are not included. Replace sealing surfaces as needed and inspect the mating components for wear or corrosion before charging the system.

Quality Assurance

Four Seasons 55455 is an OE replacement hose assembly built to match the original application requirements for the listed vehicles. The included seals and O-rings support proper connection at the A/C line interfaces.