Four Seasons 66113 A/C Refrigerant Discharge / Suction Hose Assembly

OE A/C Hose Assembly for Buick and Chevrolet

Four Seasons 66113 is an OE replacement A/C refrigerant discharge / suction hose assembly built for select Buick and Chevrolet applications. It combines aluminum and rubber construction with the correct manifold, muffler, and seal details needed for a direct-fit HVAC line replacement.

Compatible with 2012-2013 Buick LaCrosse, 2012-2013 Buick Regal with eAssist, and 2013 Chevrolet Malibu, this Four Seasons hose assembly is built for R134a systems and matches the original line layout used in these vehicles.

Key Features

• Part number 66113 for direct identification and ordering
• OE replacement A/C refrigerant discharge / suction hose assembly
• Aluminum / rubber construction for HVAC routing and vibration control
• Designed for R134a refrigerant systems
• Includes gasket or seal and O-rings
• Manifold suction style with muffler
• Discharge and suction line configuration
• Built without a switch service port, service port, or bracket

Product Details

Four Seasons Hose Assembly 66113 is a replacement HVAC line assembly that connects the A/C system’s discharge and suction paths while maintaining the factory-style fit and connection points. The hose uses P-nut fittings at the discharge and suction ends, a block-style manifold suction connection, and included slimline washer O-rings to support proper sealing at the joints. This part is an OE replacement for select Buick LaCrosse, Buick Regal eAssist, and Chevrolet Malibu models.

This part cross-references UAC (e.g., HA111940C) for the same application.

Common A/C Problems This Part Can Address

• Refrigerant loss from a leaking hose assembly
• Cracked or deteriorated rubber sections in the A/C line
• Damaged fittings at the discharge or suction connection points
• Noisy or inefficient A/C operation caused by a compromised line assembly
• Service issues related to an incorrect or mismatched replacement hose

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 manifold and fitting style match the original equipment layout on the vehicle. Proper evacuation, leak checking, and recharge procedures should be followed after installation to restore system performance.

Fits 2012-2013 Buick LaCrosse, N/A. Fits 2012-2013 Buick Regal, N/A. Fits 2013 Chevrolet Malibu, N/A.

Quality Assurance

Four Seasons 66113 is an OE replacement hose assembly engineered to match factory-style HVAC line requirements for the listed Buick and Chevrolet applications. The part number 66113 is also referenced under Bosch 66113 and Global Parts Distributors LLC 4813073 for the same application.