Four Seasons 55454 A/C Refrigerant Discharge / Suction Hose Assembly

Four Seasons 55454 A/C Hose Assembly

Four Seasons 55454 is an OE replacement A/C refrigerant discharge and suction hose assembly for select Chevrolet and GMC trucks and SUVs. Built with aluminum and rubber construction, it is made for R134a systems and includes the required seals for service on the listed applications.

Key Features

• Part number 55454 from Four Seasons Hose Assembly line
• Discharge and suction line assembly for HVAC service
• Aluminum / rubber construction
• R134a refrigerant type
• Female O-ring ends on both discharge and suction sides
• Manifold design with muffler
• O-rings included; gasket or seal included
• OE replacement design for factory-style service

Product Details

Four Seasons 55454 is a direct-fit style A/C hose assembly for vehicles using an R134a refrigerant system. It features female UNF O-ring connections on the discharge and suction ends, a manifold layout, and a muffler for the specified HVAC routing. This hose assembly is listed for 1987-1991 Chevrolet S10, 1991 GMC Sonoma, 1987-1990 GMC S15, 1987-1989 Chevrolet S10 Blazer, and 1987-1989 GMC S15 Jimmy applications. The Four Seasons 55454 part number is also referenced by several interchange numbers for the same application.

This part cross-references Monroe Shocks & Struts (e.g., 34798) for the same application.

Common Repair Uses

• Leaking or cracked A/C refrigerant hose
• Loss of refrigerant pressure in the discharge or suction line
• Damaged O-ring sealing surfaces at the hose connections
• Restricted airflow through a worn hose assembly with muffler section
• Factory hose replacement on aging Chevrolet and GMC HVAC systems

Installation Notes

Verify the vehicle’s A/C line routing, end style, and manifold layout before installation. This assembly is listed without a service port, switch port, bracket, or fittings, so reuse or source any vehicle-specific mounting or connection components as required by the application. Replace the sealing surfaces with the included O-rings and confirm proper evacuation and recharge procedures for R134a service after installation.

Quality Assurance

Four Seasons supplies OE replacement HVAC components, and this hose assembly is built to match the listed factory-style application requirements for Chevrolet S10, GMC Sonoma, GMC S15, Chevrolet S10 Blazer, and GMC S15 Jimmy models. Part number 55454 is intended for direct replacement service on the specified vehicles.