Four Seasons 66196 A/C Refrigerant Discharge / Suction Hose Assembly

OE Replacement A/C Hose Assembly

Four Seasons 66196 is an OE replacement A/C refrigerant discharge and suction hose assembly for select Chevrolet Trailblazer, Trailblazer EXT, and Buick Rainier applications. Built with aluminum and rubber construction and set up for R134a refrigerant systems, it restores the refrigerant path between A/C components with the correct P-nut fittings and manifold design.

This Four Seasons Hose Assembly line focuses on direct-fit HVAC service parts for vehicles that need accurate hose routing and OE-style connections. Part number 66196 is built for the listed applications and uses included sealing washers and O-rings to support a proper seal at the connection points.

Key Features

• Four Seasons 66196 A/C refrigerant discharge / suction hose assembly
• OE replacement design for factory-style HVAC service
• Aluminum / rubber construction
• R134a refrigerant type
• P-nut fitting on both discharge and suction ends
• Manifold design with no muffler, no bracket, and no service port
• Sealing washers and O-rings included
• Switch service port not included

Detailed Description

Four Seasons 66196 is an HVAC hose assembly engineered for the refrigerant discharge and suction line in compatible GM applications. It uses a manifold-style layout with 11.700 mm discharge-end and 17.600 mm suction-end P-nut fittings, along with aluminum and rubber materials for the hose and line sections. The assembly is configured for R134a systems and is supplied without a switch port, bracket, muffler, or service port.

Compatible With 2005-2007 Buick Rainier, N/A; 2006-2009 Chevrolet Trailblazer, N/A; and 2006 Chevrolet Trailblazer EXT, N/A. Rear A/C is not included in this assembly, so verify the vehicle’s HVAC layout before ordering. This part number 66196 also cross-references Continental 66196 for the same application.

Common Problems This Part Can Address

• Refrigerant leaks at worn hose connections
• Cracked or deteriorated A/C hose material
• Loss of cooling performance from damaged discharge or suction lines
• Improper sealing at the manifold connection points
• Service replacement needs after A/C line corrosion or physical damage

Installation Notes and Tips

Confirm the vehicle uses R134a refrigerant and matches the listed hose-end style before installation. Inspect the mating surfaces, replace worn seals as needed, and verify that the discharge and suction connections align correctly with the factory routing. Because rear A/C is not included in this assembly, compare the original line layout to the replacement part before final assembly.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with OE replacement coverage in this category. Part number 66196 is built to match the listed application requirements for proper fitment and service replacement use.