Four Seasons 66630 A/C Refrigerant Discharge / Suction Hose Assembly

Four Seasons 66630 A/C Hose Assembly

The Four Seasons 66630 hose assembly is an OE replacement A/C refrigerant discharge and suction line built for specific Buick applications. It uses aluminum and rubber construction with a manifold design, muffler, and included seals to match the original routing and connection style.

Compatible with 2010 Buick LaCrosse and 2011 Buick Regal, this Four Seasons hose assembly is built for R134a systems and is identified by part number 66630.

Key Features

• Part type: A/C refrigerant discharge / suction hose assembly
• Material: aluminum / rubber
• Refrigerant type: R134a
• OE replacement design for factory-style fitment
• Manifold style with muffler
• Discharge and suction ends use P-nut fittings
• Block-style manifold suction connection
• Gasket or seal included
• O-rings included
• No service port, switch port, or bracket

Product Details

Four Seasons Hose Assembly 66630 is a discharge and suction line assembly for HVAC systems that require an OE-style replacement. The aluminum and rubber construction supports the original hose routing, while the manifold layout, muffler, and slimline washer O-ring seals help match the factory connection points on the vehicle side and compressor side. This part is intended for R134a refrigerant systems and is listed as an OE replacement.

This part cross-references UAC HA111971C for the same application.

Common Issues This Part May Address

• Refrigerant leakage at the hose assembly connections
• Cracked or deteriorated A/C hose material
• Loss of cooling performance from a damaged discharge or suction line
• Improper sealing at the manifold or fitting interfaces
• Noise or vibration related to a worn hose assembly

Installation Notes

Verify the vehicle uses an R134a A/C system before installation. Inspect the mating surfaces, replace any damaged seals, and confirm the P-nut fitting and block manifold connections match the original layout. Proper evacuation and recharge procedures are required after the hose assembly is installed.

Fits 2010 Buick LaCrosse and 2011 Buick Regal, N/A.

Quality Assurance

Four Seasons 66630 is an OE replacement hose assembly built to match the original application for the listed Buick models. Confirm fitment by year, make, model, and connection style before ordering.