Four Seasons 56661 A/C Refrigerant Discharge / Suction Hose Assembly

OE Replacement A/C Hose Assembly

Four Seasons 56661 is an OE replacement A/C refrigerant discharge and suction hose assembly built for R134a systems. It combines aluminum and rubber construction with a manifold, muffler, and integrated seal components to support proper refrigerant routing in the HVAC system.

Compatible with 1997-1999 Buick Park Avenue, this hose assembly is a direct-fit service part for the factory-style A/C line layout. Four Seasons Hose Assembly 56661 is also referenced by cross numbers such as UAC HA10462C for the same application.

Key Features

• Part type: A/C refrigerant discharge / suction hose assembly
• OE replacement design for factory-style service
• Aluminum / rubber construction
• For R134a refrigerant systems
• Includes gasket or seal components and O-rings
• Manifold included with muffler
• Switch port provision included
• Discharge end: dual O-ring flange
• Suction end: dual O-ring female O-ring
• Four Seasons 56661 identification for catalog matching

Product Details

This Four Seasons Hose Assembly line part is built as a discharge and suction line for HVAC service on the 1997-1999 Buick Park Avenue. The assembly uses aluminum and rubber sections to balance routing flexibility with line durability, while the OE replacement format supports factory-style connection points. Four Seasons 56661 is specified for R134a refrigerant systems and includes the seal components needed at the connection points.

The discharge side uses a dual O-ring flange style, and the suction side uses a dual O-ring female O-ring style. The assembly also includes a manifold and muffler, with a switch port provision present on the hose assembly. Four Seasons 56661 is the catalog number to reference when matching the correct HVAC hose for Buick Park Avenue service work.

Common Problems This Part Addresses

• Refrigerant loss from cracked or leaking A/C hose sections
• Damaged hose connections at the discharge or suction ends
• Failed seals or O-rings at the HVAC line junctions
• Restricted or noisy A/C line operation related to a worn hose assembly
• Service issues on the factory A/C refrigerant routing for Buick Park Avenue models

Installation Notes

Verify the vehicle uses R134a refrigerant and match the end styles, manifold layout, and switch port configuration before installation. Transfer or connect only the components specified for the vehicle application, and inspect mating surfaces for wear or contamination before sealing the lines. Confirm the hose routing matches the original HVAC layout on 1997-1999 Buick Park Avenue models.

Quality Assurance

Four Seasons 56661 is an OE replacement hose assembly from Four Seasons, a brand commonly used for HVAC service parts and catalog-matched replacement components. Use the part number 56661 to confirm application details against the vehicle’s original A/C line configuration.