Four Seasons 63171 A/C Suction and Liquid Line Hose Assembly

Overview

Four Seasons 63171 is an A/C suction and liquid line hose assembly built for HVAC service on select GM applications. It combines aluminum and rubber construction with an integrated heat exchanger style and includes the service port, gasket or seal, and fittings called out in the product data.

Compatible with 2021-2024 Cadillac XT6 and 2020-2023 GMC Acadia applications using R134a refrigerant. This Four Seasons hose assembly 63171 is a direct-fit HVAC line solution for vehicles that need a suction and liquid line assembly with the specified end connections.

Key Features

• Aluminum and rubber construction for a balance of routing flexibility and line durability.
• Hose assembly with IHX style for integrated HVAC line design.
• P-nut fitting on one end and flange connection on the other.
• Configured for R134a and R1234YF refrigerant types.
• Service port included, with gasket or seal and fittings included.
• Built without a bracket and without a muffler.

Detailed Description

Four Seasons 63171 is an A/C suction and liquid line hose assembly engineered for select Cadillac XT6 and GMC Acadia HVAC systems. The aluminum/rubber construction supports the routing demands of modern refrigerant plumbing, while the IHX-style assembly helps package the suction and liquid line functions in one serviceable component. The end design uses a P-nut fitting and a flange connection, matching the listed application requirements.

This part cross-references Continental 63171 for the same application. Four Seasons 63171 is listed for 2021-2024 Cadillac XT6 and 2020-2023 GMC Acadia models with R134a refrigerant, making it a fitment-specific replacement for the original A/C line assembly.

Common Issues This Part Can Address

• Leaking or damaged A/C hose assembly.
• Cracked or worn refrigerant line connections.
• Loss of refrigerant flow through the suction and liquid line circuit.
• Service port damage or missing port components.
• Improper sealing at the hose-to-system connection points.

Installation Notes

Verify refrigerant type, end connections, and vehicle application before installation. This assembly is listed without a bracket and without a muffler, so confirm the existing mounting and line layout match the replacement part. Replace any required seals during service and evacuate and recharge the system according to the vehicle manufacturer procedure.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. Part number 63171 is built to support a proper HVAC repair when the listed fitment and refrigerant specifications are matched.