Four Seasons 66020 A/C Refrigerant Suction Hose

Reliable A/C Refrigerant Suction Hose for Chevrolet and GMC Trucks

The Four Seasons Hose Assembly 66020 is designed to provide dependable performance for your vehicle's HVAC system. Engineered specifically for Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and Sierra 3500 HD models, this A/C refrigerant suction hose ensures proper refrigerant flow and system efficiency.

• Constructed from durable aluminum and rubber materials for long-lasting use
• Features a P-nut fitting on the suction end and a sealing washer on the opposite end
• Compatible with R134-a refrigerant systems operating under low pressure
• Includes necessary gaskets and fittings for a complete installation
• OE replacement part designed without a service port, muffler, bracket, or switch

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on delivering precise HVAC hose solutions tailored to specific vehicle applications. The 66020 suction hose assembly is part of this line, offering a direct OE replacement that maintains system integrity and performance for heavy-duty Chevrolet and GMC trucks. This product line emphasizes compatibility and quality materials to meet the demands of factory HVAC systems.

Product Details and Specifications

This A/C refrigerant suction hose is constructed from a combination of aluminum and rubber, providing flexibility and resistance to wear. The hose assembly features a P-nut fitting on the suction end and a sealing washer on the other, ensuring a secure and leak-free connection. Designed for use with R134-a refrigerant, it operates under low system pressure and includes all necessary gaskets and fittings for installation. The hose assembly does not include a service port, muffler, bracket, or switch, aligning with original equipment specifications.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in Chevrolet Silverado 2500 HD and 3500 HD
• Restoring proper refrigerant flow in GMC Sierra 2500 HD and 3500 HD HVAC systems
• Eliminating refrigerant leaks caused by cracked or deteriorated hoses
• Maintaining low-pressure side integrity for efficient air conditioning performance
• Ensuring compatibility with R134-a refrigerant systems in heavy-duty trucks

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66020, ensure all fittings and gaskets are properly seated to prevent leaks. The included sealing washer and P-nut fitting should be tightened to manufacturer torque specifications. Since this hose assembly does not include a service port or bracket, verify that existing components are in good condition and compatible. It is recommended to inspect the entire HVAC suction line during replacement to maintain system reliability.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, meeting original equipment standards for fit and function. The materials and construction are selected to withstand typical HVAC system pressures and environmental conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty against defects in material and workmanship.