Four Seasons 56175 A/C Refrigerant Discharge / Suction Hose Assembly

OE Replacement A/C Hose Assembly

Four Seasons 56175 is an OE replacement A/C refrigerant discharge and suction hose assembly for R134a systems. It is built with aluminum and rubber construction and includes the required seals and service port features for the listed applications.

Compatible with 1996-1998 Chevrolet C1500 and K1500, as well as 1996-1998 GMC C1500 and K1500, this hose assembly is a direct-fit HVAC line component for service on the factory air conditioning system. Four Seasons Hose Assembly line parts are built for vehicle-specific HVAC repairs where the original hose has leaked, cracked, or lost sealing integrity.

Key Features

• Part number 56175
• Part type: A/C refrigerant discharge / suction hose assembly
• Aluminum / rubber construction
• Designed for R134a refrigerant systems
• Includes gasket or seal and O-rings
• Includes switch service port and R134-A quick disconnect service port
• Manifold design with muffler
• OE replacement configuration
• Female O-ring ends with UNF dual O-ring discharge end style
• Fits without bracket and without switch included

Detailed Description

Four Seasons 56175 is a discharge and suction line assembly for HVAC service on select GM trucks. It uses aluminum and rubber materials to match the routing and sealing requirements of the original air conditioning hose assembly, while the included seals and O-rings support proper connection at the refrigerant line interfaces. The manifold and muffler features are part of the assembly design, and the service port is configured for R134-A quick disconnect service access.

This part cross-references UAC HA1623C for the same application. Search terms such as 1996 Chevrolet C1500 A/C hose assembly, 1997 GMC K1500 refrigerant discharge suction line, and 1998 Chevrolet K1500 HVAC hose replacement all point to this OE-style replacement part. Four Seasons 56175 is also referenced by the Four Seasons Hose Assembly product line for vehicle-specific A/C line service.

Common Problems This Part Can Address

• Refrigerant loss from a cracked or leaking hose assembly
• Damaged sealing surfaces at the hose ends
• Service port leakage or worn port components
• Reduced A/C performance caused by line restriction or hose deterioration
• Failure of the original discharge/suction line on GM truck HVAC systems

Installation Notes and Tips

Verify the vehicle’s refrigerant system uses R134a before installation. Inspect mating surfaces, replace worn seals as needed, and confirm the hose routing matches the original layout on the vehicle. This assembly is listed without a bracket and without fittings included, so compare the existing hardware and connection points before beginning the repair. After installation, evacuate and recharge the system according to factory service procedures.

Quality Assurance

Four Seasons 56175 is an OE replacement HVAC hose assembly built for the listed Chevrolet and GMC applications. Confirm fitment by year, make, model, and system configuration before installation.