Four Seasons 66002 A/C Refrigerant Discharge Hose

Overview of Four Seasons Hose Assembly 66002

The Four Seasons Hose Assembly 66002 is designed for high-pressure A/C refrigerant discharge applications. Engineered with durable aluminum and rubber materials, this hose assembly is compatible with R134a refrigerant systems, specifically for Chevrolet and GMC heavy-duty trucks.

• Constructed from aluminum and rubber for durability and flexibility
• Designed for high-pressure A/C refrigerant discharge lines
• Includes gasket, fittings, and O-rings for a complete installation
• Equipped with a switch service port (M10 x 1.25 thread size)
• Compatible with Chevrolet Silverado 2500 HD, 3500 HD and GMC Sierra 2500 HD, 3500 HD models

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing reliable hose assemblies for HVAC systems in automotive applications. This line includes components designed to meet or exceed original equipment specifications, ensuring proper fit and function. The 66002 hose assembly is part of this line, offering a direct OE replacement for high-pressure discharge lines without brackets or mufflers, but with included fittings and seals for ease of installation.

Product Features and Specifications

This A/C refrigerant discharge hose is built to handle high system pressures and is compatible with R134a refrigerant. It features a P-nut fitting suction end and includes two slimline washer O-rings (part number 24402) and one green O-ring (part number 24606) to ensure a secure, leak-free connection. The hose assembly comes with a switch service port but does not include the switch itself. It is designed without a bracket or muffler, simplifying installation in the HVAC system of compatible vehicles.

Compatible Vehicles and Applications

• Chevrolet Silverado 2500 HD
• Chevrolet Silverado 3500 HD
• GMC Sierra 2500 HD
• GMC Sierra 3500 HD

This hose assembly is intended for use in the A/C system's refrigerant discharge line, replacing worn or damaged components to maintain proper system pressure and refrigerant flow.

Common Issues Addressed by Part Number 66002

• Leaking or cracked A/C refrigerant discharge hose
• Loss of system pressure causing reduced cooling efficiency
• Damaged or missing O-rings leading to refrigerant leaks
• Faulty or missing switch service port connections
• Wear from exposure to heat and vibration in heavy-duty trucks

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66002, ensure all included O-rings and gaskets are properly seated to prevent leaks. The hose assembly does not include a bracket or muffler, so verify existing mounting points and supports are intact. The switch service port is included but the switch itself must be sourced separately if required. Use appropriate tools to tighten fittings to manufacturer torque specifications, and confirm compatibility with the vehicle’s R134a refrigerant system.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, manufactured to meet original equipment standards. The product includes all necessary seals and fittings to ensure a reliable installation. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region or distributor.